3736999161 has 81 divisors (see below), whose sum is σ = 6527986959. Its totient is φ = 2054001600.

The previous prime is 3736999121. The next prime is 3736999163. The reversal of 3736999161 is 1619996373.

The square root of 3736999161 is 61131.

It is a perfect power (a square), and thus also a powerful number.

3736999161 is a `hidden beast` number, since 37 + 369 + 99 + 161 = 666.

It can be written as a sum of positive squares in only one way, i.e., 180069561 + 3556929600 = 13419^2 + 59640^2 .

It is not a de Polignac number, because 3736999161 - 2⁷ = 3736999033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3736999098 and 3736999107.

It is not an unprimeable number, because it can be changed into a prime (3736999163) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 52633756 + ... + 52633826.

Almost surely, 2^3736999161 is an apocalyptic number.

3736999161 is the 61131-st square number.

3736999161 is the 30566-th centered octagonal number.

It is an amenable number.

3736999161 is a deficient number, since it is larger than the sum of its proper divisors (2790987798).

3736999161 is an equidigital number, since it uses as much as digits as its factorization.

3736999161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 122 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The cubic root of 3736999161 is about 1551.8187683889.

The spelling of 3736999161 in words is "three billion, seven hundred thirty-six million, nine hundred ninety-nine thousand, one hundred sixty-one".