149151791 has 2 divisors, whose sum is σ = 149151792. Its totient is φ = 149151790.

The previous prime is 149151787. The next prime is 149151799. The reversal of 149151791 is 197151941.

149151791 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149151791 - 2² = 149151787 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149151799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74575895 + 74575896.

It is an arithmetic number, because the mean of its divisors is an integer number (74575896).

Almost surely, 2^149151791 is an apocalyptic number.

149151791 is a deficient number, since it is larger than the sum of its proper divisors (1).

149151791 is an equidigital number, since it uses as much as digits as its factorization.

149151791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 38.

The square root of 149151791 is about 12212.7716346454. The cubic root of 149151791 is about 530.3258835970.

The spelling of 149151791 in words is "one hundred forty-nine million, one hundred fifty-one thousand, seven hundred ninety-one".