161465944 has 8 divisors (see below), whose sum is σ = 302748660. Its totient is φ = 80732968.

The previous prime is 161465929. The next prime is 161465947. The reversal of 161465944 is 449564161.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×161465944² = 52142502143622272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161465897 and 161465906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161465947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10091614 + ... + 10091629.

Almost surely, 2^161465944 is an apocalyptic number.

It is an amenable number.

161465944 is a deficient number, since it is larger than the sum of its proper divisors (141282716).

161465944 is a wasteful number, since it uses less digits than its factorization.

161465944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20183249 (or 20183245 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 161465944 is about 12706.9250410947. The cubic root of 161465944 is about 544.5364787663.

It can be divided in two parts, 161465 and 944, that added together give a square (162409 = 403²).

The spelling of 161465944 in words is "one hundred sixty-one million, four hundred sixty-five thousand, nine hundred forty-four".