150905149 has 4 divisors (see below), whose sum is σ = 151442460. Its totient is φ = 150367840.

The previous prime is 150905147. The next prime is 150905173. The reversal of 150905149 is 941509051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 941509051 = 7 ⋅134501293.

It can be written as a sum of positive squares in 2 ways, for example, as 86825124 + 64080025 = 9318^2 + 8005^2 .

It is a cyclic number.

It is not a de Polignac number, because 150905149 - 2¹ = 150905147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150905147) 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, 268234 + ... + 268795.

It is an arithmetic number, because the mean of its divisors is an integer number (37860615).

Almost surely, 2^150905149 is an apocalyptic number.

It is an amenable number.

150905149 is a deficient number, since it is larger than the sum of its proper divisors (537311).

150905149 is an equidigital number, since it uses as much as digits as its factorization.

150905149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537310.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 150905149 is about 12284.3456887211. The cubic root of 150905149 is about 532.3958802210.

The spelling of 150905149 in words is "one hundred fifty million, nine hundred five thousand, one hundred forty-nine".