3687163920 has 120 divisors (see below), whose sum is σ = 13508456832. Its totient is φ = 893856000.

The previous prime is 3687163811. The next prime is 3687163927. The reversal of 3687163920 is 293617863.

3687163920 is a `hidden beast` number, since 3 + 6 + 8 + 7 + 1 + 639 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (3687163927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 224856 + ... + 240695.

Almost surely, 2^3687163920 is an apocalyptic number.

3687163920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3687163920 is an abundant number, since it is smaller than the sum of its proper divisors (9821292912).

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

3687163920 is a wasteful number, since it uses less digits than its factorization.

3687163920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465581 (or 465572 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 3687163920 is about 60722.0217054735. The cubic root of 3687163920 is about 1544.8897146904.

The spelling of 3687163920 in words is "three billion, six hundred eighty-seven million, one hundred sixty-three thousand, nine hundred twenty".