3618786520 has 32 divisors (see below), whose sum is σ = 8144817120. Its totient is φ = 1447061760.

The previous prime is 3618786503. The next prime is 3618786527. The reversal of 3618786520 is 256878163.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3618786527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134605 + ... + 159235.

It is an arithmetic number, because the mean of its divisors is an integer number (254525535).

Almost surely, 2^3618786520 is an apocalyptic number.

It is an amenable number.

3618786520 is an abundant number, since it is smaller than the sum of its proper divisors (4526030600).

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

3618786520 is a wasteful number, since it uses less digits than its factorization.

3618786520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28315 (or 28311 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 3618786520 is about 60156.3506206951. The cubic root of 3618786520 is about 1535.2802198968.

The spelling of 3618786520 in words is "three billion, six hundred eighteen million, seven hundred eighty-six thousand, five hundred twenty".