161838734 has 32 divisors (see below), whose sum is σ = 257796000. Its totient is φ = 76083840.

The previous prime is 161838727. The next prime is 161838769. The reversal of 161838734 is 437838161.

It is a junction number, because it is equal to n+sod(n) for n = 161838691 and 161838700.

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, 527009 + ... + 527315.

It is an arithmetic number, because the mean of its divisors is an integer number (8056125).

Almost surely, 2^161838734 is an apocalyptic number.

161838734 is a deficient number, since it is larger than the sum of its proper divisors (95957266).

161838734 is a wasteful number, since it uses less digits than its factorization.

161838734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its digits is 96768, while the sum is 41.

The square root of 161838734 is about 12721.5853571793. The cubic root of 161838734 is about 544.9552290468.

The spelling of 161838734 in words is "one hundred sixty-one million, eight hundred thirty-eight thousand, seven hundred thirty-four".