161263345 has 16 divisors (see below), whose sum is σ = 204456960. Its totient is φ = 121906624.

The previous prime is 161263339. The next prime is 161263357. The reversal of 161263345 is 543362161.

It is a cyclic number.

It is not a de Polignac number, because 161263345 - 2³ = 161263337 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5017 + ... + 18646.

It is an arithmetic number, because the mean of its divisors is an integer number (12778560).

Almost surely, 2^161263345 is an apocalyptic number.

It is an amenable number.

161263345 is a deficient number, since it is larger than the sum of its proper divisors (43193615).

161263345 is a wasteful number, since it uses less digits than its factorization.

161263345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23744.

The product of its digits is 12960, while the sum is 31.

The square root of 161263345 is about 12698.9505471909. The cubic root of 161263345 is about 544.3086315026.

The spelling of 161263345 in words is "one hundred sixty-one million, two hundred sixty-three thousand, three hundred forty-five".