149438205 has 48 divisors (see below), whose sum is σ = 298247040. Its totient is φ = 67803264.

The previous prime is 149438203. The next prime is 149438213. The reversal of 149438205 is 502834941.

149438205 is a `hidden beast` number, since 14 + 9 + 438 + 205 = 666.

It is not a de Polignac number, because 149438205 - 2¹ = 149438203 is a prime.

It is a super-2 number, since 2×149438205² = 44663554227244050, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149438205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149438203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42079 + ... + 45491.

It is an arithmetic number, because the mean of its divisors is an integer number (6213480).

Almost surely, 2^149438205 is an apocalyptic number.

149438205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149438205 is a deficient number, since it is larger than the sum of its proper divisors (148808835).

149438205 is a wasteful number, since it uses less digits than its factorization.

149438205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570 (or 3567 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 149438205 is about 12224.4920139857. The cubic root of 149438205 is about 530.6651255518.

The spelling of 149438205 in words is "one hundred forty-nine million, four hundred thirty-eight thousand, two hundred five".