161464045 has 16 divisors (see below), whose sum is σ = 205539120. Its totient is φ = 121345024.

The previous prime is 161464031. The next prime is 161464081. The reversal of 161464045 is 540464161.

It can be written as a sum of positive squares in 8 ways, for example, as 3232804 + 158231241 = 1798^2 + 12579^2 .

It is a cyclic number.

It is not a de Polignac number, because 161464045 - 2⁵ = 161464013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161463998 and 161464016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54051 + ... + 56959.

It is an arithmetic number, because the mean of its divisors is an integer number (12846195).

Almost surely, 2^161464045 is an apocalyptic number.

It is an amenable number.

161464045 is a deficient number, since it is larger than the sum of its proper divisors (44075075).

161464045 is a wasteful number, since it uses less digits than its factorization.

161464045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 161464045 is about 12706.8503178404. The cubic root of 161464045 is about 544.5343439945.

The spelling of 161464045 in words is "one hundred sixty-one million, four hundred sixty-four thousand, forty-five".