161171146 has 4 divisors (see below), whose sum is σ = 241756722. Its totient is φ = 80585572.

The previous prime is 161171141. The next prime is 161171147. The reversal of 161171146 is 641171161.

161171146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160149025 + 1022121 = 12655^2 + 1011^2 .

It is a super-2 number, since 2×161171146² = 51952276605906632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161171141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40292785 + ... + 40292788.

Almost surely, 2^161171146 is an apocalyptic number.

161171146 is a deficient number, since it is larger than the sum of its proper divisors (80585576).

161171146 is an equidigital number, since it uses as much as digits as its factorization.

161171146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80585575.

The product of its digits is 1008, while the sum is 28.

The square root of 161171146 is about 12695.3198463056. The cubic root of 161171146 is about 544.2048793065.

The spelling of 161171146 in words is "one hundred sixty-one million, one hundred seventy-one thousand, one hundred forty-six".