1136991837 has 16 divisors (see below), whose sum is σ = 1533109248. Its totient is φ = 749477040.

The previous prime is 1136991829. The next prime is 1136991847. The reversal of 1136991837 is 7381996311.

It is not a de Polignac number, because 1136991837 - 2³ = 1136991829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1136991827) 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, 106108 + ... + 116330.

It is an arithmetic number, because the mean of its divisors is an integer number (95819328).

Almost surely, 2^1136991837 is an apocalyptic number.

It is an amenable number.

1136991837 is a deficient number, since it is larger than the sum of its proper divisors (396117411).

1136991837 is a wasteful number, since it uses less digits than its factorization.

1136991837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10640.

The product of its digits is 244944, while the sum is 48.

The square root of 1136991837 is about 33719.3095569883. The cubic root of 1136991837 is about 1043.7242697136.

The spelling of 1136991837 in words is "one billion, one hundred thirty-six million, nine hundred ninety-one thousand, eight hundred thirty-seven".