3644982180 has 120 divisors (see below), whose sum is σ = 13067976768. Its totient is φ = 833136192.

The previous prime is 3644982157. The next prime is 3644982203. The reversal of 3644982180 is 812894463.

It is a happy number.

3644982180 is a `hidden beast` number, since 3 + 64 + 498 + 21 + 80 = 666.

It is an interprime number because it is at equal distance from previous prime (3644982157) and next prime (3644982203).

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 149374 + ... + 172053.

Almost surely, 2^3644982180 is an apocalyptic number.

3644982180 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3644982180 is an abundant number, since it is smaller than the sum of its proper divisors (9422994588).

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

3644982180 is a wasteful number, since it uses less digits than its factorization.

3644982180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321455 (or 321444 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 3644982180 is about 60373.6878118274. The cubic root of 3644982180 is about 1538.9758440402.

The spelling of 3644982180 in words is "three billion, six hundred forty-four million, nine hundred eighty-two thousand, one hundred eighty".