149319571 has 2 divisors, whose sum is σ = 149319572. Its totient is φ = 149319570.

The previous prime is 149319563. The next prime is 149319589. The reversal of 149319571 is 175913941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149319571 - 2³ = 149319563 is a prime.

It is not a weakly prime, because it can be changed into another prime (149319671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74659785 + 74659786.

It is an arithmetic number, because the mean of its divisors is an integer number (74659786).

Almost surely, 2^149319571 is an apocalyptic number.

149319571 is a deficient number, since it is larger than the sum of its proper divisors (1).

149319571 is an equidigital number, since it uses as much as digits as its factorization.

149319571 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34020, while the sum is 40.

The square root of 149319571 is about 12219.6387426143. The cubic root of 149319571 is about 530.5246626023.

The spelling of 149319571 in words is "one hundred forty-nine million, three hundred nineteen thousand, five hundred seventy-one".