7813161 has 12 divisors (see below), whose sum is σ = 11879920. Its totient is φ = 4934520.

The previous prime is 7813153. The next prime is 7813177. The reversal of 7813161 is 1613187.

7813161 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7813161 - 2³ = 7813153 is a prime.

It is a super-2 number, since 2×7813161² = 122090969623842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7813111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22675 + ... + 23016.

Almost surely, 2^7813161 is an apocalyptic number.

It is an amenable number.

7813161 is a deficient number, since it is larger than the sum of its proper divisors (4066759).

7813161 is a wasteful number, since it uses less digits than its factorization.

7813161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45716 (or 45713 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 7813161 is about 2795.2032126484. The cubic root of 7813161 is about 198.4307274560.

The spelling of 7813161 in words is "seven million, eight hundred thirteen thousand, one hundred sixty-one".