169113137 has 4 divisors (see below), whose sum is σ = 169145076. Its totient is φ = 169081200.

The previous prime is 169113101. The next prime is 169113149. The reversal of 169113137 is 731311961.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 100620961 + 68492176 = 10031^2 + 8276^2 .

It is a cyclic number.

It is not a de Polignac number, because 169113137 - 2¹⁶ = 169047601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169113337) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918 + ... + 19319.

It is an arithmetic number, because the mean of its divisors is an integer number (42286269).

Almost surely, 2^169113137 is an apocalyptic number.

It is an amenable number.

169113137 is a deficient number, since it is larger than the sum of its proper divisors (31939).

169113137 is an equidigital number, since it uses as much as digits as its factorization.

169113137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31938.

The product of its digits is 3402, while the sum is 32.

The square root of 169113137 is about 13004.3506950559. The cubic root of 169113137 is about 553.0008284025. Note that the first 3 decimals are identical.

The spelling of 169113137 in words is "one hundred sixty-nine million, one hundred thirteen thousand, one hundred thirty-seven".