161015942190 has 16 divisors (see below), whose sum is σ = 386438261328. Its totient is φ = 42937584576.

The previous prime is 161015942189. The next prime is 161015942239. The reversal of 161015942190 is 91249510161.

161015942190 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161015942190² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2683599007 + ... + 2683599066.

It is an arithmetic number, because the mean of its divisors is an integer number (24152391333).

Almost surely, 2^161015942190 is an apocalyptic number.

161015942190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161015942190 is an abundant number, since it is smaller than the sum of its proper divisors (225422319138).

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

161015942190 is a wasteful number, since it uses less digits than its factorization.

161015942190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5367198083.

The product of its (nonzero) digits is 19440, while the sum is 39.

The spelling of 161015942190 in words is "one hundred sixty-one billion, fifteen million, nine hundred forty-two thousand, one hundred ninety".