149290313 has 2 divisors, whose sum is σ = 149290314. Its totient is φ = 149290312.

The previous prime is 149290303. The next prime is 149290331. The reversal of 149290313 is 313092941.

Together with next prime (149290331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137545984 + 11744329 = 11728^2 + 3427^2 .

It is a cyclic number.

It is not a de Polignac number, because 149290313 - 2²² = 145096009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 149290313.

It is not a weakly prime, because it can be changed into another prime (149290303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74645156 + 74645157.

It is an arithmetic number, because the mean of its divisors is an integer number (74645157).

Almost surely, 2^149290313 is an apocalyptic number.

It is an amenable number.

149290313 is a deficient number, since it is larger than the sum of its proper divisors (1).

149290313 is an equidigital number, since it uses as much as digits as its factorization.

149290313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 149290313 is about 12218.4415127298. The cubic root of 149290313 is about 530.4900096219.

The spelling of 149290313 in words is "one hundred forty-nine million, two hundred ninety thousand, three hundred thirteen".