149417185 has 4 divisors (see below), whose sum is σ = 179300628. Its totient is φ = 119533744.

The previous prime is 149417173. The next prime is 149417189. The reversal of 149417185 is 581714941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 581714941 = 167 ⋅3483323.

It can be written as a sum of positive squares in 2 ways, for example, as 38093584 + 111323601 = 6172^2 + 10551^2 .

It is a cyclic number.

It is not a de Polignac number, because 149417185 - 2⁵ = 149417153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149417189) 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, 14941714 + ... + 14941723.

It is an arithmetic number, because the mean of its divisors is an integer number (44825157).

Almost surely, 2^149417185 is an apocalyptic number.

It is an amenable number.

149417185 is a deficient number, since it is larger than the sum of its proper divisors (29883443).

149417185 is an equidigital number, since it uses as much as digits as its factorization.

149417185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29883442.

The product of its digits is 40320, while the sum is 40.

The square root of 149417185 is about 12223.6322343238. The cubic root of 149417185 is about 530.6402432401.

The spelling of 149417185 in words is "one hundred forty-nine million, four hundred seventeen thousand, one hundred eighty-five".