118121537 has 16 divisors (see below), whose sum is σ = 130757760. Its totient is φ = 106204032.

The previous prime is 118121503. The next prime is 118121543. The reversal of 118121537 is 735121811.

It is a cyclic number.

It is not a de Polignac number, because 118121537 - 2¹⁴ = 118105153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118121587) 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, 58883 + ... + 60855.

It is an arithmetic number, because the mean of its divisors is an integer number (8172360).

Almost surely, 2^118121537 is an apocalyptic number.

It is an amenable number.

118121537 is a deficient number, since it is larger than the sum of its proper divisors (12636223).

118121537 is a wasteful number, since it uses less digits than its factorization.

118121537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152.

The product of its digits is 1680, while the sum is 29.

The square root of 118121537 is about 10868.3732453390. The cubic root of 118121537 is about 490.6551516867.

The spelling of 118121537 in words is "one hundred eighteen million, one hundred twenty-one thousand, five hundred thirty-seven".