161390174 has 8 divisors (see below), whose sum is σ = 264093048. Its totient is φ = 73359160.

The previous prime is 161390167. The next prime is 161390179. The reversal of 161390174 is 471093161.

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

It is a self number, because there is not a number n which added to its sum of digits gives 161390174.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161390179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667937 + ... + 3667980.

It is an arithmetic number, because the mean of its divisors is an integer number (33011631).

Almost surely, 2^161390174 is an apocalyptic number.

161390174 is a deficient number, since it is larger than the sum of its proper divisors (102702874).

161390174 is a wasteful number, since it uses less digits than its factorization.

161390174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7335930.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 161390174 is about 12703.9432460949. The cubic root of 161390174 is about 544.4512884913.

The spelling of 161390174 in words is "one hundred sixty-one million, three hundred ninety thousand, one hundred seventy-four".