3157766640 has 320 divisors, whose sum is σ = 12833464320. Its totient is φ = 698388480.

The previous prime is 3157766639. The next prime is 3157766701. The reversal of 3157766640 is 466677513.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 465352 + ... + 472088.

It is an arithmetic number, because the mean of its divisors is an integer number (40104576).

Almost surely, 2^3157766640 is an apocalyptic number.

3157766640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3157766640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6416732160).

3157766640 is an abundant number, since it is smaller than the sum of its proper divisors (9675697680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3157766640 is a wasteful number, since it uses less digits than its factorization.

3157766640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6797 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 3157766640 is about 56194.0089333374. The cubic root of 3157766640 is about 1467.1009921231.

The spelling of 3157766640 in words is "three billion, one hundred fifty-seven million, seven hundred sixty-six thousand, six hundred forty".