3129946064 has 40 divisors (see below), whose sum is σ = 6972137088. Its totient is φ = 1333365120.

The previous prime is 3129946033. The next prime is 3129946067. The reversal of 3129946064 is 4606499213.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129946067) 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, 64967 + ... + 102374.

Almost surely, 2^3129946064 is an apocalyptic number.

It is an amenable number.

3129946064 is an abundant number, since it is smaller than the sum of its proper divisors (3842191024).

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

3129946064 is a wasteful number, since it uses less digits than its factorization.

3129946064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167523 (or 167517 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 3129946064 is about 55945.9208879432. The cubic root of 3129946064 is about 1462.7797894002.

The spelling of 3129946064 in words is "three billion, one hundred twenty-nine million, nine hundred forty-six thousand, sixty-four".