161187795 has 48 divisors (see below), whose sum is σ = 308722752. Its totient is φ = 77383680.

The previous prime is 161187781. The next prime is 161187809. The reversal of 161187795 is 597781161.

It is an interprime number because it is at equal distance from previous prime (161187781) and next prime (161187809).

It is not a de Polignac number, because 161187795 - 2⁹ = 161187283 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 161187795.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13015 + ... + 22175.

It is an arithmetic number, because the mean of its divisors is an integer number (6431724).

Almost surely, 2^161187795 is an apocalyptic number.

161187795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161187795 is a deficient number, since it is larger than the sum of its proper divisors (147534957).

161187795 is a wasteful number, since it uses less digits than its factorization.

161187795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9212 (or 9209 counting only the distinct ones).

The product of its digits is 105840, while the sum is 45.

The square root of 161187795 is about 12695.9755434547. The cubic root of 161187795 is about 544.2236174725.

It can be divided in two parts, 16 and 1187795, that added together give a palindrome (1187811).

The spelling of 161187795 in words is "one hundred sixty-one million, one hundred eighty-seven thousand, seven hundred ninety-five".