1249790163 has 4 divisors (see below), whose sum is σ = 1666386888. Its totient is φ = 833193440.

The previous prime is 1249790137. The next prime is 1249790183. The reversal of 1249790163 is 3610979421.

1249790163 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1249790163 - 2¹⁴ = 1249773779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1249790183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208298358 + ... + 208298363.

It is an arithmetic number, because the mean of its divisors is an integer number (416596722).

Almost surely, 2^1249790163 is an apocalyptic number.

1249790163 is a deficient number, since it is larger than the sum of its proper divisors (416596725).

1249790163 is an equidigital number, since it uses as much as digits as its factorization.

1249790163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416596724.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1249790163 is about 35352.3713914640. The cubic root of 1249790163 is about 1077.1570642944.

The spelling of 1249790163 in words is "one billion, two hundred forty-nine million, seven hundred ninety thousand, one hundred sixty-three".