3640363820 has 12 divisors (see below), whose sum is σ = 7644764064. Its totient is φ = 1456145520.

The previous prime is 3640363813. The next prime is 3640363861. The reversal of 3640363820 is 283630463.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91009076 + ... + 91009115.

It is an arithmetic number, because the mean of its divisors is an integer number (637063672).

Almost surely, 2^3640363820 is an apocalyptic number.

It is an amenable number.

3640363820 is an abundant number, since it is smaller than the sum of its proper divisors (4004400244).

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

3640363820 is a wasteful number, since it uses less digits than its factorization.

3640363820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182018200 (or 182018198 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 3640363820 is about 60335.4275695466. The cubic root of 3640363820 is about 1538.3255849439.

The spelling of 3640363820 in words is "three billion, six hundred forty million, three hundred sixty-three thousand, eight hundred twenty".