2153220790 has 32 divisors (see below), whose sum is σ = 4662616320. Its totient is φ = 699391584.

The previous prime is 2153220781. The next prime is 2153220863. The reversal of 2153220790 is 970223512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 808152 + ... + 810811.

It is an arithmetic number, because the mean of its divisors is an integer number (145706760).

Almost surely, 2^2153220790 is an apocalyptic number.

2153220790 is an abundant number, since it is smaller than the sum of its proper divisors (2509395530).

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

2153220790 is a wasteful number, since it uses less digits than its factorization.

2153220790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618996.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 2153220790 is about 46402.8101519725. The cubic root of 2153220790 is about 1291.3070481254.

The spelling of 2153220790 in words is "two billion, one hundred fifty-three million, two hundred twenty thousand, seven hundred ninety".