22949523081 has 9 divisors (see below), whose sum is σ = 33149967591. Its totient is φ = 15299379072.

The previous prime is 22949523059. The next prime is 22949523109. The reversal of 22949523081 is 18032594922.

The square root of 22949523081 is 151491.

It is a perfect power (a square), and thus also a powerful number.

22949523081 is a `hidden beast` number, since 2 + 2 + 9 + 49 + 523 + 0 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2667206025 + 20282317056 = 51645^2 + 142416^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 22949523081 - 2²³ = 22941134473 is a prime.

It is a super-2 number, since 2×22949523081² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22949323081) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 429225 + ... + 479721.

Almost surely, 2^22949523081 is an apocalyptic number.

22949523081 is the 151491-st square number.

22949523081 is the 75746-th centered octagonal number.

It is an amenable number.

22949523081 is a deficient number, since it is larger than the sum of its proper divisors (10200444510).

22949523081 is an frugal number, since it uses more digits than its factorization.

22949523081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101000 (or 50500 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 22949523081 in words is "twenty-two billion, nine hundred forty-nine million, five hundred twenty-three thousand, eighty-one".