3950925638 has 24 divisors (see below), whose sum is σ = 6690202176. Its totient is φ = 1747334160.

The previous prime is 3950925631. The next prime is 3950925659. The reversal of 3950925638 is 8365290593.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3950925631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211670 + ... + 229577.

It is an arithmetic number, because the mean of its divisors is an integer number (278758424).

Almost surely, 2^3950925638 is an apocalyptic number.

3950925638 is a deficient number, since it is larger than the sum of its proper divisors (2739276538).

3950925638 is a wasteful number, since it uses less digits than its factorization.

3950925638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441308 (or 441297 counting only the distinct ones).

The product of its (nonzero) digits is 1749600, while the sum is 50.

The square root of 3950925638 is about 62856.3889990508. The cubic root of 3950925638 is about 1580.8825969342.

The spelling of 3950925638 in words is "three billion, nine hundred fifty million, nine hundred twenty-five thousand, six hundred thirty-eight".