185494564 has 6 divisors (see below), whose sum is σ = 324615494. Its totient is φ = 92747280.

The previous prime is 185494513. The next prime is 185494583. The reversal of 185494564 is 465494581.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 158558464 + 26936100 = 12592^2 + 5190^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23186817 + ... + 23186824.

Almost surely, 2^185494564 is an apocalyptic number.

It is an amenable number.

185494564 is a deficient number, since it is larger than the sum of its proper divisors (139120930).

185494564 is a wasteful number, since it uses less digits than its factorization.

185494564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46373645 (or 46373643 counting only the distinct ones).

The product of its digits is 691200, while the sum is 46.

The square root of 185494564 is about 13619.6389085761. The cubic root of 185494564 is about 570.3092238241.

The spelling of 185494564 in words is "one hundred eighty-five million, four hundred ninety-four thousand, five hundred sixty-four".