22691031849 has 16 divisors (see below), whose sum is σ = 33628103040. Its totient is φ = 15122062800.

The previous prime is 22691031833. The next prime is 22691031863. The reversal of 22691031849 is 94813019622.

It is not a de Polignac number, because 22691031849 - 2⁴ = 22691031833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22691031049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67602 + ... + 223499.

It is an arithmetic number, because the mean of its divisors is an integer number (2101756440).

Almost surely, 2^22691031849 is an apocalyptic number.

It is an amenable number.

22691031849 is a deficient number, since it is larger than the sum of its proper divisors (10937071191).

22691031849 is a wasteful number, since it uses less digits than its factorization.

22691031849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293997 (or 293991 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 22691031849 in words is "twenty-two billion, six hundred ninety-one million, thirty-one thousand, eight hundred forty-nine".