149220013 has 2 divisors, whose sum is σ = 149220014. Its totient is φ = 149220012.

The previous prime is 149220007. The next prime is 149220023. The reversal of 149220013 is 310022941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 82846404 + 66373609 = 9102^2 + 8147^2 .

It is an emirp because it is prime and its reverse (310022941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149220013 - 2²⁵ = 115665581 is a prime.

It is a super-2 number, since 2×149220013² = 44533224559440338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149220023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74610006 + 74610007.

It is an arithmetic number, because the mean of its divisors is an integer number (74610007).

Almost surely, 2^149220013 is an apocalyptic number.

It is an amenable number.

149220013 is a deficient number, since it is larger than the sum of its proper divisors (1).

149220013 is an equidigital number, since it uses as much as digits as its factorization.

149220013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 149220013 is about 12215.5643750094. The cubic root of 149220013 is about 530.4067282573.

Adding to 149220013 its reverse (310022941), we get a palindrome (459242954).

The spelling of 149220013 in words is "one hundred forty-nine million, two hundred twenty thousand, thirteen".