161253476 has 12 divisors (see below), whose sum is σ = 282320640. Its totient is φ = 80590440.

The previous prime is 161253467. The next prime is 161253487. The reversal of 161253476 is 674352161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585 + ... + 18143.

It is an arithmetic number, because the mean of its divisors is an integer number (23526720).

Almost surely, 2^161253476 is an apocalyptic number.

It is an amenable number.

161253476 is a deficient number, since it is larger than the sum of its proper divisors (121067164).

161253476 is a wasteful number, since it uses less digits than its factorization.

161253476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18154 (or 18152 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 161253476 is about 12698.5619658290. The cubic root of 161253476 is about 544.2975277363.

The spelling of 161253476 in words is "one hundred sixty-one million, two hundred fifty-three thousand, four hundred seventy-six".