1249576538 has 24 divisors (see below), whose sum is σ = 2184012000. Its totient is φ = 534641688.

The previous prime is 1249576529. The next prime is 1249576547. The reversal of 1249576538 is 8356759421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1249576529) and next prime (1249576547).

It is a super-2 number, since 2×1249576538² = 3122883048640130888, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50363 + ... + 70961.

It is an arithmetic number, because the mean of its divisors is an integer number (91000500).

Almost surely, 2^1249576538 is an apocalyptic number.

1249576538 is a deficient number, since it is larger than the sum of its proper divisors (934435462).

1249576538 is a wasteful number, since it uses less digits than its factorization.

1249576538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21234 (or 21227 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 50.

The square root of 1249576538 is about 35349.3498950122. The cubic root of 1249576538 is about 1077.0956884474.

The spelling of 1249576538 in words is "one billion, two hundred forty-nine million, five hundred seventy-six thousand, five hundred thirty-eight".