1137288981 has 8 divisors (see below), whose sum is σ = 1582315200. Its totient is φ = 725227712.

The previous prime is 1137288959. The next prime is 1137289007. The reversal of 1137288981 is 1898827311.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1137288981 - 2⁵ = 1137288949 is a prime.

It is a super-2 number, since 2×1137288981² = 2586852452608036722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1137288981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1137288931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8241156 + ... + 8241293.

It is an arithmetic number, because the mean of its divisors is an integer number (197789400).

Almost surely, 2^1137288981 is an apocalyptic number.

It is an amenable number.

1137288981 is a deficient number, since it is larger than the sum of its proper divisors (445026219).

1137288981 is a wasteful number, since it uses less digits than its factorization.

1137288981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16482475.

The product of its digits is 193536, while the sum is 48.

The square root of 1137288981 is about 33723.7154091894. The cubic root of 1137288981 is about 1043.8151848756.

The spelling of 1137288981 in words is "one billion, one hundred thirty-seven million, two hundred eighty-eight thousand, nine hundred eighty-one".