154380493 has 2 divisors, whose sum is σ = 154380494. Its totient is φ = 154380492.

The previous prime is 154380469. The next prime is 154380497. The reversal of 154380493 is 394083451.

154380493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134861769 + 19518724 = 11613^2 + 4418^2 .

It is an emirp because it is prime and its reverse (394083451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154380493 - 2¹³ = 154372301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154380497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77190246 + 77190247.

It is an arithmetic number, because the mean of its divisors is an integer number (77190247).

Almost surely, 2^154380493 is an apocalyptic number.

It is an amenable number.

154380493 is a deficient number, since it is larger than the sum of its proper divisors (1).

154380493 is an equidigital number, since it uses as much as digits as its factorization.

154380493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 154380493 is about 12424.9946881276. The cubic root of 154380493 is about 536.4519247237.

The spelling of 154380493 in words is "one hundred fifty-four million, three hundred eighty thousand, four hundred ninety-three".