150191901 has 10 divisors (see below), whose sum is σ = 224360862. Its totient is φ = 100127880.

The previous prime is 150191857. The next prime is 150191911. The reversal of 150191901 is 109191051.

It can be written as a sum of positive squares in only one way, i.e., 142205625 + 7986276 = 11925^2 + 2826^2 .

It is not a de Polignac number, because 150191901 - 2¹⁴ = 150175517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150191911) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 927030 + ... + 927191.

Almost surely, 2^150191901 is an apocalyptic number.

It is an amenable number.

150191901 is a deficient number, since it is larger than the sum of its proper divisors (74168961).

150191901 is an equidigital number, since it uses as much as digits as its factorization.

150191901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854233 (or 1854224 counting only the distinct ones).

The product of its (nonzero) digits is 405, while the sum is 27.

The square root of 150191901 is about 12255.2805353448. The cubic root of 150191901 is about 531.5557716364. Note that the first 3 decimals are identical.

The spelling of 150191901 in words is "one hundred fifty million, one hundred ninety-one thousand, nine hundred one".