154649093 has 2 divisors, whose sum is σ = 154649094. Its totient is φ = 154649092.

The previous prime is 154649087. The next prime is 154649123. The reversal of 154649093 is 390946451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150970369 + 3678724 = 12287^2 + 1918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154649093 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154649093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154649393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77324546 + 77324547.

It is an arithmetic number, because the mean of its divisors is an integer number (77324547).

Almost surely, 2^154649093 is an apocalyptic number.

It is an amenable number.

154649093 is a deficient number, since it is larger than the sum of its proper divisors (1).

154649093 is an equidigital number, since it uses as much as digits as its factorization.

154649093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 154649093 is about 12435.7988484858. The cubic root of 154649093 is about 536.7628610321.

The spelling of 154649093 in words is "one hundred fifty-four million, six hundred forty-nine thousand, ninety-three".