149161585 has 4 divisors (see below), whose sum is σ = 178993908. Its totient is φ = 119329264.

The previous prime is 149161577. The next prime is 149161591. The reversal of 149161585 is 585161941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 94342369 + 54819216 = 9713^2 + 7404^2 .

It is a cyclic number.

It is not a de Polignac number, because 149161585 - 2³ = 149161577 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14916154 + ... + 14916163.

It is an arithmetic number, because the mean of its divisors is an integer number (44748477).

Almost surely, 2^149161585 is an apocalyptic number.

It is an amenable number.

149161585 is a deficient number, since it is larger than the sum of its proper divisors (29832323).

149161585 is an equidigital number, since it uses as much as digits as its factorization.

149161585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29832322.

The product of its digits is 43200, while the sum is 40.

The square root of 149161585 is about 12213.1726017444. The cubic root of 149161585 is about 530.3374912306.

The spelling of 149161585 in words is "one hundred forty-nine million, one hundred sixty-one thousand, five hundred eighty-five".