1253664363 has 24 divisors (see below), whose sum is σ = 1957370880. Its totient is φ = 711622800.

The previous prime is 1253664353. The next prime is 1253664409. The reversal of 1253664363 is 3634663521.

It is not a de Polignac number, because 1253664363 - 2⁸ = 1253664107 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253664353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6043 + ... + 50436.

It is an arithmetic number, because the mean of its divisors is an integer number (81557120).

Almost surely, 2^1253664363 is an apocalyptic number.

1253664363 is a deficient number, since it is larger than the sum of its proper divisors (703706517).

1253664363 is a wasteful number, since it uses less digits than its factorization.

1253664363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56647 (or 56640 counting only the distinct ones).

The product of its digits is 233280, while the sum is 39.

The square root of 1253664363 is about 35407.1230545493. The cubic root of 1253664363 is about 1078.2689355437.

The spelling of 1253664363 in words is "one billion, two hundred fifty-three million, six hundred sixty-four thousand, three hundred sixty-three".