4245877581 has 8 divisors (see below), whose sum is σ = 6175821984. Its totient is φ = 2573259120.

The previous prime is 4245877567. The next prime is 4245877591. The reversal of 4245877581 is 1857785424.

It is a happy number.

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

It is not a de Polignac number, because 4245877581 - 2¹⁷ = 4245746509 is a prime.

It is a super-2 number, since 2×4245877581² = 36054952865676823122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245877591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64331446 + ... + 64331511.

It is an arithmetic number, because the mean of its divisors is an integer number (771977748).

Almost surely, 2^4245877581 is an apocalyptic number.

It is an amenable number.

4245877581 is a deficient number, since it is larger than the sum of its proper divisors (1929944403).

4245877581 is a wasteful number, since it uses less digits than its factorization.

4245877581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128662971.

The product of its digits is 2508800, while the sum is 51.

The square root of 4245877581 is about 65160.3988707865. The cubic root of 4245877581 is about 1619.2820042617.

The spelling of 4245877581 in words is "four billion, two hundred forty-five million, eight hundred seventy-seven thousand, five hundred eighty-one".