161445039 has 16 divisors (see below), whose sum is σ = 260483328. Its totient is φ = 86827392.

The previous prime is 161445019. The next prime is 161445041. The reversal of 161445039 is 930544161.

It is not a de Polignac number, because 161445039 - 2⁸ = 161444783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161445019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225757 + ... + 226470.

It is an arithmetic number, because the mean of its divisors is an integer number (16280208).

Almost surely, 2^161445039 is an apocalyptic number.

161445039 is a deficient number, since it is larger than the sum of its proper divisors (99038289).

161445039 is a wasteful number, since it uses less digits than its factorization.

161445039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452254.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 161445039 is about 12706.1024315090. The cubic root of 161445039 is about 544.5129773680.

The spelling of 161445039 in words is "one hundred sixty-one million, four hundred forty-five thousand, thirty-nine".