154090913 has 2 divisors, whose sum is σ = 154090914. Its totient is φ = 154090912.

The previous prime is 154090901. The next prime is 154090919. The reversal of 154090913 is 319090451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109160704 + 44930209 = 10448^2 + 6703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154090913 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 154090913.

It is not a weakly prime, because it can be changed into another prime (154090919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77045456 + 77045457.

It is an arithmetic number, because the mean of its divisors is an integer number (77045457).

Almost surely, 2^154090913 is an apocalyptic number.

It is an amenable number.

154090913 is a deficient number, since it is larger than the sum of its proper divisors (1).

154090913 is an equidigital number, since it uses as much as digits as its factorization.

154090913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 154090913 is about 12413.3360947007. The cubic root of 154090913 is about 536.1162973033.

The spelling of 154090913 in words is "one hundred fifty-four million, ninety thousand, nine hundred thirteen".