3123985757 has 8 divisors (see below), whose sum is σ = 3292548000. Its totient is φ = 2955837744.

The previous prime is 3123985727. The next prime is 3123985817. The reversal of 3123985757 is 7575893213.

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 3123985757 - 2¹⁸ = 3123723613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123985727) 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, 88007 + ... + 118292.

It is an arithmetic number, because the mean of its divisors is an integer number (411568500).

Almost surely, 2^3123985757 is an apocalyptic number.

It is an amenable number.

3123985757 is a deficient number, since it is larger than the sum of its proper divisors (168562243).

3123985757 is a wasteful number, since it uses less digits than its factorization.

3123985757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207115.

The product of its digits is 1587600, while the sum is 50.

The square root of 3123985757 is about 55892.6270361306. The cubic root of 3123985757 is about 1461.8506832172.

The spelling of 3123985757 in words is "three billion, one hundred twenty-three million, nine hundred eighty-five thousand, seven hundred fifty-seven".