161045374 has 16 divisors (see below), whose sum is σ = 278188416. Its totient is φ = 68491800.

The previous prime is 161045351. The next prime is 161045383. The reversal of 161045374 is 473540161.

It is a super-2 number, since 2×161045374² = 51871224973599752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42072 + ... + 45739.

It is an arithmetic number, because the mean of its divisors is an integer number (17386776).

Almost surely, 2^161045374 is an apocalyptic number.

161045374 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

161045374 is a deficient number, since it is larger than the sum of its proper divisors (117143042).

161045374 is a wasteful number, since it uses less digits than its factorization.

161045374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87951.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 161045374 is about 12690.3654005706. The cubic root of 161045374 is about 544.0632833495.

The spelling of 161045374 in words is "one hundred sixty-one million, forty-five thousand, three hundred seventy-four".