150883981 has 4 divisors (see below), whose sum is σ = 151113600. Its totient is φ = 150654364.

The previous prime is 150883973. The next prime is 150884003. The reversal of 150883981 is 189388051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 150883981 - 2³ = 150883973 is a prime.

It is a super-2 number, since 2×150883981² = 45531951444816722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150883081) 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, 113821 + ... + 115138.

It is an arithmetic number, because the mean of its divisors is an integer number (37778400).

Almost surely, 2^150883981 is an apocalyptic number.

It is an amenable number.

150883981 is a deficient number, since it is larger than the sum of its proper divisors (229619).

150883981 is an equidigital number, since it uses as much as digits as its factorization.

150883981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229618.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 150883981 is about 12283.4840741542. The cubic root of 150883981 is about 532.3709853714.

The spelling of 150883981 in words is "one hundred fifty million, eight hundred eighty-three thousand, nine hundred eighty-one".