161051193 has 16 divisors (see below), whose sum is σ = 238795200. Its totient is φ = 107277120.

The previous prime is 161051173. The next prime is 161051197. The reversal of 161051193 is 391150161.

161051193 is a `hidden beast` number, since 1 + 61 + 0 + 511 + 93 = 666.

161051193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161051193 - 2⁸ = 161050937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (161051197) 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, 50593 + ... + 53681.

It is an arithmetic number, because the mean of its divisors is an integer number (14924700).

Almost surely, 2^161051193 is an apocalyptic number.

It is an amenable number.

161051193 is a deficient number, since it is larger than the sum of its proper divisors (77744007).

161051193 is a wasteful number, since it uses less digits than its factorization.

161051193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029 (or 5023 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 27.

The square root of 161051193 is about 12690.5946669177. The cubic root of 161051193 is about 544.0698360910.

The spelling of 161051193 in words is "one hundred sixty-one million, fifty-one thousand, one hundred ninety-three".