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6342812981 = 29445149139
BaseRepresentation
bin1011110100000111…
…11010010100110101
3121101001010021200022
411322003322110311
5100442230003411
62525220254525
7313116010061
oct57203722465
917331107608
106342812981
1127653972aa
121290241445
137a110689b
14442568aa1
15271ca1edb
hex17a0fa535

6342812981 has 8 divisors (see below), whose sum is σ = 6563138400. Its totient is φ = 6122594800.

The previous prime is 6342812887. The next prime is 6342813013. The reversal of 6342812981 is 1892182436.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6342812981 - 214 = 6342796597 is a prime.

It is a super-2 number, since 2×63428129812 = 80462553023884212722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6342812681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104510 + ... + 153648.

It is an arithmetic number, because the mean of its divisors is an integer number (820392300).

Almost surely, 26342812981 is an apocalyptic number.

It is an amenable number.

6342812981 is a deficient number, since it is larger than the sum of its proper divisors (220325419).

6342812981 is a wasteful number, since it uses less digits than its factorization.

6342812981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53619.

The product of its digits is 165888, while the sum is 44.

The square root of 6342812981 is about 79641.7791174959. The cubic root of 6342812981 is about 1851.0890087890.

The spelling of 6342812981 in words is "six billion, three hundred forty-two million, eight hundred twelve thousand, nine hundred eighty-one".

Divisors: 1 29 4451 49139 129079 1425031 218717689 6342812981