149118281 has 8 divisors (see below), whose sum is σ = 164324160. Its totient is φ = 134446032.

The previous prime is 149118239. The next prime is 149118293. The reversal of 149118281 is 182811941.

149118281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149118281 - 2¹⁸ = 148856137 is a prime.

It is a super-2 number, since 2×149118281² = 44472523456789922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149118481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132821 + ... + 133938.

It is an arithmetic number, because the mean of its divisors is an integer number (20540520).

Almost surely, 2^149118281 is an apocalyptic number.

It is an amenable number.

149118281 is a deficient number, since it is larger than the sum of its proper divisors (15205879).

149118281 is a wasteful number, since it uses less digits than its factorization.

149118281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266815.

The product of its digits is 4608, while the sum is 35.

The square root of 149118281 is about 12211.3996331297. The cubic root of 149118281 is about 530.2861644373.

The spelling of 149118281 in words is "one hundred forty-nine million, one hundred eighteen thousand, two hundred eighty-one".