3925391664 has 80 divisors (see below), whose sum is σ = 10843636320. Its totient is φ = 1219276800.

The previous prime is 3925391651. The next prime is 3925391677. The reversal of 3925391664 is 4661935293.

It is an interprime number because it is at equal distance from previous prime (3925391651) and next prime (3925391677).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58602 + ... + 106230.

It is an arithmetic number, because the mean of its divisors is an integer number (135545454).

Almost surely, 2^3925391664 is an apocalyptic number.

3925391664 is a gapful number since it is divisible by the number (34) 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 3925391664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5421818160).

3925391664 is an abundant number, since it is smaller than the sum of its proper divisors (6918244656).

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

3925391664 is a wasteful number, since it uses less digits than its factorization.

3925391664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47758 (or 47752 counting only the distinct ones).

The product of its digits is 1049760, while the sum is 48.

The square root of 3925391664 is about 62652.9461717484. The cubic root of 3925391664 is about 1577.4696002708.

The spelling of 3925391664 in words is "three billion, nine hundred twenty-five million, three hundred ninety-one thousand, six hundred sixty-four".