161574130 has 8 divisors (see below), whose sum is σ = 290833452. Its totient is φ = 64629648.

The previous prime is 161574121. The next prime is 161574131. The reversal of 161574130 is 31475161.

161574130 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 156525121 + 5049009 = 12511^2 + 2247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161574130² = 52212398970513800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161574131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8078697 + ... + 8078716.

Almost surely, 2^161574130 is an apocalyptic number.

161574130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161574130 is a deficient number, since it is larger than the sum of its proper divisors (129259322).

161574130 is a wasteful number, since it uses less digits than its factorization.

161574130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16157420.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 161574130 is about 12711.1812983688. The cubic root of 161574130 is about 544.6580690526.

The spelling of 161574130 in words is "one hundred sixty-one million, five hundred seventy-four thousand, one hundred thirty".