4431961900 has 36 divisors (see below), whose sum is σ = 9626736280. Its totient is φ = 1771056000.

The previous prime is 4431961889. The next prime is 4431961943. The reversal of 4431961900 is 91691344.

It is a super-2 number, since 2×4431961900² = 39284572566103220000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4431961900.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84016 + ... + 126184.

Almost surely, 2^4431961900 is an apocalyptic number.

It is an amenable number.

4431961900 is an abundant number, since it is smaller than the sum of its proper divisors (5194774380).

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

4431961900 is a wasteful number, since it uses less digits than its factorization.

4431961900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43234 (or 43227 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 4431961900 is about 66572.9817568659. The cubic root of 4431961900 is about 1642.6007095299.

It can be divided in two parts, 443196 and 1900, that added together give a triangular number (445096 = T₉₄₃).

The spelling of 4431961900 in words is "four billion, four hundred thirty-one million, nine hundred sixty-one thousand, nine hundred".