2157774622 has 8 divisors (see below), whose sum is σ = 3261369672. Its totient is φ = 1070651400.

The previous prime is 2157774581. The next prime is 2157774629. The reversal of 2157774622 is 2264777512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157774629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4117629 + ... + 4118152.

It is an arithmetic number, because the mean of its divisors is an integer number (407671209).

Almost surely, 2^2157774622 is an apocalyptic number.

2157774622 is a deficient number, since it is larger than the sum of its proper divisors (1103595050).

2157774622 is a wasteful number, since it uses less digits than its factorization.

2157774622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235914.

The product of its digits is 329280, while the sum is 43.

The square root of 2157774622 is about 46451.8527294660. The cubic root of 2157774622 is about 1292.2167326283.

The spelling of 2157774622 in words is "two billion, one hundred fifty-seven million, seven hundred seventy-four thousand, six hundred twenty-two".