3857157868 has 24 divisors (see below), whose sum is σ = 7048510560. Its totient is φ = 1843416960.

The previous prime is 3857157809. The next prime is 3857157881. The reversal of 3857157868 is 8687517583.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122098 + ... + 150406.

It is an arithmetic number, because the mean of its divisors is an integer number (293687940).

Almost surely, 2^3857157868 is an apocalyptic number.

It is an amenable number.

3857157868 is a deficient number, since it is larger than the sum of its proper divisors (3191352692).

3857157868 is a wasteful number, since it uses less digits than its factorization.

3857157868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29817 (or 29815 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 58.

The square root of 3857157868 is about 62106.0211895755. The cubic root of 3857157868 is about 1568.2759101406.

The spelling of 3857157868 in words is "three billion, eight hundred fifty-seven million, one hundred fifty-seven thousand, eight hundred sixty-eight".