3918250772 has 24 divisors (see below), whose sum is σ = 7050372840. Its totient is φ = 1904215040.

The previous prime is 3918250733. The next prime is 3918250781. The reversal of 3918250772 is 2770528193.

It can be written as a sum of positive squares in 4 ways, for example, as 137968516 + 3780282256 = 11746^2 + 61484^2 .

It is a super-2 number, since 2×3918250772² = 30705378224557191968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 293 + ... + 88524.

It is an arithmetic number, because the mean of its divisors is an integer number (293765535).

Almost surely, 2^3918250772 is an apocalyptic number.

It is an amenable number.

3918250772 is a deficient number, since it is larger than the sum of its proper divisors (3132122068).

3918250772 is a wasteful number, since it uses less digits than its factorization.

3918250772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89131 (or 89129 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 3918250772 is about 62595.9325515644. The cubic root of 3918250772 is about 1576.5124662597.

The spelling of 3918250772 in words is "three billion, nine hundred eighteen million, two hundred fifty thousand, seven hundred seventy-two".