149751013 has 2 divisors, whose sum is σ = 149751014. Its totient is φ = 149751012.

The previous prime is 149750957. The next prime is 149751029. The reversal of 149751013 is 310157941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86992929 + 62758084 = 9327^2 + 7922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149751013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149751053) 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, 74875506 + 74875507.

It is an arithmetic number, because the mean of its divisors is an integer number (74875507).

Almost surely, 2^149751013 is an apocalyptic number.

It is an amenable number.

149751013 is a deficient number, since it is larger than the sum of its proper divisors (1).

149751013 is an equidigital number, since it uses as much as digits as its factorization.

149751013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 149751013 is about 12237.2796405083. The cubic root of 149751013 is about 531.0351349223.

The spelling of 149751013 in words is "one hundred forty-nine million, seven hundred fifty-one thousand, thirteen".