1156390137 has 12 divisors (see below), whose sum is σ = 1908961600. Its totient is φ = 660794328.

The previous prime is 1156390129. The next prime is 1156390171. The reversal of 1156390137 is 7310936511.

1156390137 is a `hidden beast` number, since 1 + 1 + 5 + 639 + 0 + 13 + 7 = 666.

It is not a de Polignac number, because 1156390137 - 2³ = 1156390129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1156390127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9177637 + ... + 9177762.

Almost surely, 2^1156390137 is an apocalyptic number.

It is an amenable number.

1156390137 is a deficient number, since it is larger than the sum of its proper divisors (752571463).

1156390137 is a wasteful number, since it uses less digits than its factorization.

1156390137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18355412 (or 18355409 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 1156390137 is about 34005.7368248359. The cubic root of 1156390137 is about 1049.6265147860.

The spelling of 1156390137 in words is "one billion, one hundred fifty-six million, three hundred ninety thousand, one hundred thirty-seven".