150370991 has 2 divisors, whose sum is σ = 150370992. Its totient is φ = 150370990.

The previous prime is 150370963. The next prime is 150370993. The reversal of 150370991 is 199073051.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150370991 is a prime.

It is a super-2 number, since 2×150370991² = 45222869868644162, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 150370993, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (150370993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75185495 + 75185496.

It is an arithmetic number, because the mean of its divisors is an integer number (75185496).

Almost surely, 2^150370991 is an apocalyptic number.

150370991 is a deficient number, since it is larger than the sum of its proper divisors (1).

150370991 is an equidigital number, since it uses as much as digits as its factorization.

150370991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 150370991 is about 12262.5850048022. The cubic root of 150370991 is about 531.7669648054.

The spelling of 150370991 in words is "one hundred fifty million, three hundred seventy thousand, nine hundred ninety-one".