1031644653 has 16 divisors (see below), whose sum is σ = 1559302080. Its totient is φ = 601444224.

The previous prime is 1031644639. The next prime is 1031644699. The reversal of 1031644653 is 3564461301.

It is not a de Polignac number, because 1031644653 - 2¹⁶ = 1031579117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031644613) 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, 695376 + ... + 696857.

It is an arithmetic number, because the mean of its divisors is an integer number (97456380).

Almost surely, 2^1031644653 is an apocalyptic number.

1031644653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1031644653 is a deficient number, since it is larger than the sum of its proper divisors (527657427).

1031644653 is a wasteful number, since it uses less digits than its factorization.

1031644653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392268.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1031644653 is about 32119.2255977631. The cubic root of 1031644653 is about 1010.4388685163.

The spelling of 1031644653 in words is "one billion, thirty-one million, six hundred forty-four thousand, six hundred fifty-three".