161915070 has 32 divisors (see below), whose sum is σ = 390453120. Its totient is φ = 42971040.

The previous prime is 161915069. The next prime is 161915107. The reversal of 161915070 is 70519161.

161915070 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 6460 + ... + 19119.

It is an arithmetic number, because the mean of its divisors is an integer number (12201660).

Almost surely, 2^161915070 is an apocalyptic number.

161915070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161915070 is an abundant number, since it is smaller than the sum of its proper divisors (228538050).

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

161915070 is a wasteful number, since it uses less digits than its factorization.

161915070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25800.

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 161915070 is about 12724.5852584672. The cubic root of 161915070 is about 545.0408969675.

The spelling of 161915070 in words is "one hundred sixty-one million, nine hundred fifteen thousand, seventy".