149919147 has 32 divisors (see below), whose sum is σ = 255221760. Its totient is φ = 85199040.

The previous prime is 149919071. The next prime is 149919157. The reversal of 149919147 is 741919941.

149919147 is a `hidden beast` number, since 1 + 499 + 19 + 147 = 666.

It is not a de Polignac number, because 149919147 - 2⁷ = 149919019 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149919157) 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 31 ways as a sum of consecutive naturals, for example, 34023 + ... + 38175.

It is an arithmetic number, because the mean of its divisors is an integer number (7975680).

Almost surely, 2^149919147 is an apocalyptic number.

149919147 is a deficient number, since it is larger than the sum of its proper divisors (105302613).

149919147 is a wasteful number, since it uses less digits than its factorization.

149919147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4360 (or 4354 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 149919147 is about 12244.1474590924. The cubic root of 149919147 is about 531.2338017299.

The spelling of 149919147 in words is "one hundred forty-nine million, nine hundred nineteen thousand, one hundred forty-seven".