149091912 has 36 divisors (see below), whose sum is σ = 404071395. Its totient is φ = 49662768.

The previous prime is 149091893. The next prime is 149091913. The reversal of 149091912 is 219190941.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 74545956 + 74545956 = 8634^2 + 8634^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8634.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (149091913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102889 + ... + 104327.

Almost surely, 2^149091912 is an apocalyptic number.

149091912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

149091912 is an abundant number, since it is smaller than the sum of its proper divisors (254979483).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149091912 is an equidigital number, since it uses as much as digits as its factorization.

149091912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2890 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 149091912 is about 12210.3198975293. The cubic root of 149091912 is about 530.2549052694.

Multiplying 149091912 by its product of nonzero digits (5832), we get a square (869504030784 = 932472²).

The spelling of 149091912 in words is "one hundred forty-nine million, ninety-one thousand, nine hundred twelve".