161106390 has 24 divisors (see below), whose sum is σ = 418876848. Its totient is φ = 42961680.

The previous prime is 161106371. The next prime is 161106409. The reversal of 161106390 is 93601161.

161106390 is a `hidden beast` number, since 16 + 1 + 10 + 639 + 0 = 666.

161106390 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161106371) and next prime (161106409).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 894946 + ... + 895125.

It is an arithmetic number, because the mean of its divisors is an integer number (17453202).

Almost surely, 2^161106390 is an apocalyptic number.

161106390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161106390 is an abundant number, since it is smaller than the sum of its proper divisors (257770458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161106390 is a wasteful number, since it uses less digits than its factorization.

161106390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790084 (or 1790081 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 161106390 is about 12692.7692013997. The cubic root of 161106390 is about 544.1319852582.

It can be divided in two parts, 16110 and 6390, that added together give a square (22500 = 150²).

The spelling of 161106390 in words is "one hundred sixty-one million, one hundred six thousand, three hundred ninety".