1253494863 has 12 divisors (see below), whose sum is σ = 1812585840. Its totient is φ = 834748416.

The previous prime is 1253494799. The next prime is 1253494867. The reversal of 1253494863 is 3684943521.

1253494863 is a `hidden beast` number, since 12 + 534 + 9 + 48 + 63 = 666.

1253494863 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1253494863 - 2⁶ = 1253494799 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253494867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67506 + ... + 84047.

It is an arithmetic number, because the mean of its divisors is an integer number (151048820).

Almost surely, 2^1253494863 is an apocalyptic number.

1253494863 is a deficient number, since it is larger than the sum of its proper divisors (559090977).

1253494863 is a wasteful number, since it uses less digits than its factorization.

1253494863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152478 (or 152475 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 1253494863 is about 35404.7293874703. The cubic root of 1253494863 is about 1078.2203380542.

The spelling of 1253494863 in words is "one billion, two hundred fifty-three million, four hundred ninety-four thousand, eight hundred sixty-three".