653381091 has 48 divisors (see below), whose sum is σ = 1047441408. Its totient is φ = 389188800.

The previous prime is 653381089. The next prime is 653381147. The reversal of 653381091 is 190183356.

It is a happy number.

It is not a de Polignac number, because 653381091 - 2¹ = 653381089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (653381051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1973796 + ... + 1974126.

It is an arithmetic number, because the mean of its divisors is an integer number (21821696).

Almost surely, 2^653381091 is an apocalyptic number.

653381091 is a deficient number, since it is larger than the sum of its proper divisors (394060317).

653381091 is a wasteful number, since it uses less digits than its factorization.

653381091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 653381091 is about 25561.3202123834. The cubic root of 653381091 is about 867.7384743587.

The spelling of 653381091 in words is "six hundred fifty-three million, three hundred eighty-one thousand, ninety-one".