3798687857 has 4 divisors (see below), whose sum is σ = 3799234560. Its totient is φ = 3798141156.

The previous prime is 3798687853. The next prime is 3798687881. The reversal of 3798687857 is 7587868973.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3798687857 - 2² = 3798687853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3798687853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262793 + ... + 276870.

It is an arithmetic number, because the mean of its divisors is an integer number (949808640).

Almost surely, 2^3798687857 is an apocalyptic number.

It is an amenable number.

3798687857 is a deficient number, since it is larger than the sum of its proper divisors (546703).

3798687857 is an equidigital number, since it uses as much as digits as its factorization.

3798687857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546702.

The product of its digits is 142248960, while the sum is 68.

The square root of 3798687857 is about 61633.4962256726. The cubic root of 3798687857 is about 1560.3111171344.

The spelling of 3798687857 in words is "three billion, seven hundred ninety-eight million, six hundred eighty-seven thousand, eight hundred fifty-seven".