2179720536 has 32 divisors (see below), whose sum is σ = 6227773440. Its totient is φ = 622777248.

The previous prime is 2179720523. The next prime is 2179720547. The reversal of 2179720536 is 6350279712.

2179720536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6487096 + ... + 6487431.

It is an arithmetic number, because the mean of its divisors is an integer number (194617920).

Almost surely, 2^2179720536 is an apocalyptic number.

It is an amenable number.

2179720536 is an abundant number, since it is smaller than the sum of its proper divisors (4048052904).

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

2179720536 is a wasteful number, since it uses less digits than its factorization.

2179720536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12974543 (or 12974539 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 2179720536 is about 46687.4772931672. The cubic root of 2179720536 is about 1296.5828473107.

The spelling of 2179720536 in words is "two billion, one hundred seventy-nine million, seven hundred twenty thousand, five hundred thirty-six".