Search a number
-
+
8137495031 = 16921480911
BaseRepresentation
bin1111001010000100…
…00101000111110111
3210000010010120121212
413211002011013313
5113131144320111
63423250432035
7405440365211
oct74502050767
923003116555
108137495031
1134a6449506
1216b129261b
139c8b84223
14572a595b1
1532960998b
hex1e50851f7

8137495031 has 4 divisors (see below), whose sum is σ = 8137992864. Its totient is φ = 8136997200.

The previous prime is 8137495019. The next prime is 8137495087. The reversal of 8137495031 is 1305947318.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8137495031 - 214 = 8137478647 is a prime.

It is a super-2 number, since 2×81374950312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8137495031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8137495001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223535 + ... + 257376.

It is an arithmetic number, because the mean of its divisors is an integer number (2034498216).

Almost surely, 28137495031 is an apocalyptic number.

8137495031 is a deficient number, since it is larger than the sum of its proper divisors (497833).

8137495031 is a wasteful number, since it uses less digits than its factorization.

8137495031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497832.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 8137495031 is about 90208.0652214645. The cubic root of 8137495031 is about 2011.3928969680.

The spelling of 8137495031 in words is "eight billion, one hundred thirty-seven million, four hundred ninety-five thousand, thirty-one".

Divisors: 1 16921 480911 8137495031