149848813 has 2 divisors, whose sum is σ = 149848814. Its totient is φ = 149848812.

The previous prime is 149848799. The next prime is 149848817. The reversal of 149848813 is 318848941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80676324 + 69172489 = 8982^2 + 8317^2 .

It is a cyclic number.

It is not a de Polignac number, because 149848813 - 2⁹ = 149848301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149848817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74924406 + 74924407.

It is an arithmetic number, because the mean of its divisors is an integer number (74924407).

Almost surely, 2^149848813 is an apocalyptic number.

It is an amenable number.

149848813 is a deficient number, since it is larger than the sum of its proper divisors (1).

149848813 is an equidigital number, since it uses as much as digits as its factorization.

149848813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 46.

The square root of 149848813 is about 12241.2749744461. The cubic root of 149848813 is about 531.1507132930.

The spelling of 149848813 in words is "one hundred forty-nine million, eight hundred forty-eight thousand, eight hundred thirteen".