161461364 has 6 divisors (see below), whose sum is σ = 282557394. Its totient is φ = 80730680.

The previous prime is 161461351. The next prime is 161461367. The reversal of 161461364 is 463164161.

It can be written as a sum of positive squares in only one way, i.e., 86638864 + 74822500 = 9308^2 + 8650^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161461364.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161461367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20182667 + ... + 20182674.

It is an arithmetic number, because the mean of its divisors is an integer number (47092899).

Almost surely, 2^161461364 is an apocalyptic number.

It is an amenable number.

161461364 is a deficient number, since it is larger than the sum of its proper divisors (121096030).

161461364 is a wasteful number, since it uses less digits than its factorization.

161461364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40365345 (or 40365343 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 161461364 is about 12706.7448231244. The cubic root of 161461364 is about 544.5313301044.

The spelling of 161461364 in words is "one hundred sixty-one million, four hundred sixty-one thousand, three hundred sixty-four".