1653640131 has 32 divisors (see below), whose sum is σ = 2702956032. Its totient is φ = 884885760.

The previous prime is 1653640111. The next prime is 1653640147. The reversal of 1653640131 is 1310463561.

It is not a de Polignac number, because 1653640131 - 2⁹ = 1653639619 is a prime.

It is a super-2 number, since 2×1653640131² = 5469051365707394322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1653640111) 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 31 ways as a sum of consecutive naturals, for example, 73930 + ... + 93663.

It is an arithmetic number, because the mean of its divisors is an integer number (84467376).

Almost surely, 2^1653640131 is an apocalyptic number.

1653640131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1653640131 is a deficient number, since it is larger than the sum of its proper divisors (1049315901).

1653640131 is a wasteful number, since it uses less digits than its factorization.

1653640131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167643.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 1653640131 is about 40664.9742530350. The cubic root of 1653640131 is about 1182.5340855835.

The spelling of 1653640131 in words is "one billion, six hundred fifty-three million, six hundred forty thousand, one hundred thirty-one".