3651136764 has 72 divisors (see below), whose sum is σ = 9617438544. Its totient is φ = 1076486400.

The previous prime is 3651136757. The next prime is 3651136787. The reversal of 3651136764 is 4676311563.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19744 + ... + 87704.

Almost surely, 2^3651136764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651136764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4808719272).

3651136764 is an abundant number, since it is smaller than the sum of its proper divisors (5966301780).

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

3651136764 is a wasteful number, since it uses less digits than its factorization.

3651136764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68027 (or 68014 counting only the distinct ones).

The product of its digits is 272160, while the sum is 42.

The square root of 3651136764 is about 60424.6370613842. The cubic root of 3651136764 is about 1539.8415483232.

The spelling of 3651136764 in words is "three billion, six hundred fifty-one million, one hundred thirty-six thousand, seven hundred sixty-four".