3619864521 has 48 divisors (see below), whose sum is σ = 6461320320. Its totient is φ = 1901664000.

The previous prime is 3619864483. The next prime is 3619864537. The reversal of 3619864521 is 1254689163.

3619864521 is a `hidden beast` number, since 3 + 6 + 198 + 6 + 452 + 1 = 666.

It is not a de Polignac number, because 3619864521 - 2⁷ = 3619864393 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (3619864541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196765 + ... + 214373.

It is an arithmetic number, because the mean of its divisors is an integer number (134610840).

Almost surely, 2^3619864521 is an apocalyptic number.

It is an amenable number.

3619864521 is a deficient number, since it is larger than the sum of its proper divisors (2841455799).

3619864521 is a wasteful number, since it uses less digits than its factorization.

3619864521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17886 (or 17883 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 3619864521 is about 60165.3099468456. The cubic root of 3619864521 is about 1535.4326530665.

The spelling of 3619864521 in words is "three billion, six hundred nineteen million, eight hundred sixty-four thousand, five hundred twenty-one".