1013653263 has 32 divisors (see below), whose sum is σ = 1614283776. Its totient is φ = 553183488.

The previous prime is 1013653259. The next prime is 1013653301. The reversal of 1013653263 is 3623563101.

It is a happy number.

It is not a de Polignac number, because 1013653263 - 2² = 1013653259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1013653263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013653243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 422395 + ... + 424787.

It is an arithmetic number, because the mean of its divisors is an integer number (50446368).

Almost surely, 2^1013653263 is an apocalyptic number.

1013653263 is a deficient number, since it is larger than the sum of its proper divisors (600630513).

1013653263 is a wasteful number, since it uses less digits than its factorization.

1013653263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1013653263 is about 31837.9217757692. The cubic root of 1013653263 is about 1004.5305309584.

The spelling of 1013653263 in words is "one billion, thirteen million, six hundred fifty-three thousand, two hundred sixty-three".