149813453 has 2 divisors, whose sum is σ = 149813454. Its totient is φ = 149813452.

The previous prime is 149813399. The next prime is 149813471. The reversal of 149813453 is 354318941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99161764 + 50651689 = 9958^2 + 7117^2 .

It is an emirp because it is prime and its reverse (354318941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149813453 - 2¹⁴ = 149797069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149813353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74906726 + 74906727.

It is an arithmetic number, because the mean of its divisors is an integer number (74906727).

Almost surely, 2^149813453 is an apocalyptic number.

It is an amenable number.

149813453 is a deficient number, since it is larger than the sum of its proper divisors (1).

149813453 is an equidigital number, since it uses as much as digits as its factorization.

149813453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 149813453 is about 12239.8305952329. The cubic root of 149813453 is about 531.1089312543.

The spelling of 149813453 in words is "one hundred forty-nine million, eight hundred thirteen thousand, four hundred fifty-three".