1249745079 has 16 divisors (see below), whose sum is σ = 1822702464. Its totient is φ = 755383200.

The previous prime is 1249745051. The next prime is 1249745113. The reversal of 1249745079 is 9705479421.

It is not a de Polignac number, because 1249745079 - 2⁵ = 1249745047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1249745179) 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, 38457 + ... + 63074.

It is an arithmetic number, because the mean of its divisors is an integer number (113918904).

Almost surely, 2^1249745079 is an apocalyptic number.

1249745079 is a deficient number, since it is larger than the sum of its proper divisors (572957385).

1249745079 is a wasteful number, since it uses less digits than its factorization.

1249745079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101918.

The product of its (nonzero) digits is 635040, while the sum is 48.

The square root of 1249745079 is about 35351.7337481488. The cubic root of 1249745079 is about 1077.1441119513.

The spelling of 1249745079 in words is "one billion, two hundred forty-nine million, seven hundred forty-five thousand, seventy-nine".