9168439137 has 16 divisors (see below), whose sum is σ = 14361751488. Its totient is φ = 5129196480.

The previous prime is 9168439123. The next prime is 9168439153. The reversal of 9168439137 is 7319348619.

It is not a de Polignac number, because 9168439137 - 2⁴ = 9168439121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9168439137.

It is not an unprimeable number, because it can be changed into a prime (9168439177) 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, 10685398 + ... + 10686255.

It is an arithmetic number, because the mean of its divisors is an integer number (897609468).

Almost surely, 2^9168439137 is an apocalyptic number.

It is an amenable number.

9168439137 is a deficient number, since it is larger than the sum of its proper divisors (5193312351).

9168439137 is a wasteful number, since it uses less digits than its factorization.

9168439137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21371680.

The product of its digits is 979776, while the sum is 51.

The square root of 9168439137 is about 95751.9667526469. The cubic root of 9168439137 is about 2092.9802751873.

The spelling of 9168439137 in words is "nine billion, one hundred sixty-eight million, four hundred thirty-nine thousand, one hundred thirty-seven".