161377834 has 8 divisors (see below), whose sum is σ = 242476740. Its totient is φ = 80552256.

The previous prime is 161377823. The next prime is 161377841. The reversal of 161377834 is 438773161.

It can be written as a sum of positive squares in 2 ways, for example, as 161213809 + 164025 = 12697^2 + 405^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66849 + ... + 69220.

Almost surely, 2^161377834 is an apocalyptic number.

161377834 is a deficient number, since it is larger than the sum of its proper divisors (81098906).

161377834 is a wasteful number, since it uses less digits than its factorization.

161377834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136664.

The product of its digits is 84672, while the sum is 40.

The square root of 161377834 is about 12703.4575608375. The cubic root of 161377834 is about 544.4374117684.

The spelling of 161377834 in words is "one hundred sixty-one million, three hundred seventy-seven thousand, eight hundred thirty-four".