1137956521 has 16 divisors (see below), whose sum is σ = 1242077760. Its totient is φ = 1036301760.

The previous prime is 1137956503. The next prime is 1137956563. The reversal of 1137956521 is 1256597311.

It is not a de Polignac number, because 1137956521 - 2⁹ = 1137956009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1137953521) 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 15 ways as a sum of consecutive naturals, for example, 302971 + ... + 306703.

It is an arithmetic number, because the mean of its divisors is an integer number (77629860).

Almost surely, 2^1137956521 is an apocalyptic number.

It is an amenable number.

1137956521 is a deficient number, since it is larger than the sum of its proper divisors (104121239).

1137956521 is a wasteful number, since it uses less digits than its factorization.

1137956521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056.

The product of its digits is 56700, while the sum is 40.

The square root of 1137956521 is about 33733.6111467480. The cubic root of 1137956521 is about 1044.0193698911.

The spelling of 1137956521 in words is "one billion, one hundred thirty-seven million, nine hundred fifty-six thousand, five hundred twenty-one".