154900813 has 2 divisors, whose sum is σ = 154900814. Its totient is φ = 154900812.

The previous prime is 154900807. The next prime is 154900853. The reversal of 154900813 is 318009451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132641289 + 22259524 = 11517^2 + 4718^2 .

It is a cyclic number.

It is not a de Polignac number, because 154900813 - 2⁹ = 154900301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154900853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77450406 + 77450407.

It is an arithmetic number, because the mean of its divisors is an integer number (77450407).

Almost surely, 2^154900813 is an apocalyptic number.

It is an amenable number.

154900813 is a deficient number, since it is larger than the sum of its proper divisors (1).

154900813 is an equidigital number, since it uses as much as digits as its factorization.

154900813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 154900813 is about 12445.9155147382. The cubic root of 154900813 is about 537.0539301084.

The spelling of 154900813 in words is "one hundred fifty-four million, nine hundred thousand, eight hundred thirteen".