149319757 has 2 divisors, whose sum is σ = 149319758. Its totient is φ = 149319756.

The previous prime is 149319701. The next prime is 149319761. The reversal of 149319757 is 757913941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129481641 + 19838116 = 11379^2 + 4454^2 .

It is a cyclic number.

It is not a de Polignac number, because 149319757 - 2²⁷ = 15102029 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 (149319767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74659878 + 74659879.

It is an arithmetic number, because the mean of its divisors is an integer number (74659879).

Almost surely, 2^149319757 is an apocalyptic number.

It is an amenable number.

149319757 is a deficient number, since it is larger than the sum of its proper divisors (1).

149319757 is an equidigital number, since it uses as much as digits as its factorization.

149319757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 149319757 is about 12219.6463533115. The cubic root of 149319757 is about 530.5248828849.

The spelling of 149319757 in words is "one hundred forty-nine million, three hundred nineteen thousand, seven hundred fifty-seven".