3935861900 has 18 divisors (see below), whose sum is σ = 8540820540. Its totient is φ = 1574344720.

The previous prime is 3935861893. The next prime is 3935861929. The reversal of 3935861900 is 91685393.

3935861900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3935861900² = 30982017791743220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19679210 + ... + 19679409.

It is an arithmetic number, because the mean of its divisors is an integer number (474490030).

Almost surely, 2^3935861900 is an apocalyptic number.

It is an amenable number.

3935861900 is an abundant number, since it is smaller than the sum of its proper divisors (4604958640).

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

3935861900 is a wasteful number, since it uses less digits than its factorization.

3935861900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39358633 (or 39358626 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 3935861900 is about 62736.4479389772. The cubic root of 3935861900 is about 1578.8708885392.

The spelling of 3935861900 in words is "three billion, nine hundred thirty-five million, eight hundred sixty-one thousand, nine hundred".