181465964 has 12 divisors (see below), whose sum is σ = 317890944. Its totient is φ = 90639984.

The previous prime is 181465931. The next prime is 181465969. The reversal of 181465964 is 469564181.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (181465969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18764 + ... + 26739.

It is an arithmetic number, because the mean of its divisors is an integer number (26490912).

Almost surely, 2^181465964 is an apocalyptic number.

It is an amenable number.

181465964 is a deficient number, since it is larger than the sum of its proper divisors (136424980).

181465964 is a wasteful number, since it uses less digits than its factorization.

181465964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46504 (or 46502 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 181465964 is about 13470.9303316438. The cubic root of 181465964 is about 566.1502803638.

The spelling of 181465964 in words is "one hundred eighty-one million, four hundred sixty-five thousand, nine hundred sixty-four".