161146045 has 8 divisors (see below), whose sum is σ = 193446360. Its totient is φ = 128869440.

The previous prime is 161146039. The next prime is 161146057. The reversal of 161146045 is 540641161.

It can be written as a sum of positive squares in 4 ways, for example, as 99460729 + 61685316 = 9973^2 + 7854^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-161146045 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17335 + ... + 24955.

It is an arithmetic number, because the mean of its divisors is an integer number (24180795).

Almost surely, 2^161146045 is an apocalyptic number.

It is an amenable number.

161146045 is a deficient number, since it is larger than the sum of its proper divisors (32300315).

161146045 is an equidigital number, since it uses as much as digits as its factorization.

161146045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11855.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 161146045 is about 12694.3312151527. The cubic root of 161146045 is about 544.1766261189.

The spelling of 161146045 in words is "one hundred sixty-one million, one hundred forty-six thousand, forty-five".