154198379 has 2 divisors, whose sum is σ = 154198380. Its totient is φ = 154198378.

The previous prime is 154198361. The next prime is 154198391. The reversal of 154198379 is 973891451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154198379 is a prime.

It is not a weakly prime, because it can be changed into another prime (154198579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77099189 + 77099190.

It is an arithmetic number, because the mean of its divisors is an integer number (77099190).

Almost surely, 2^154198379 is an apocalyptic number.

154198379 is a deficient number, since it is larger than the sum of its proper divisors (1).

154198379 is an equidigital number, since it uses as much as digits as its factorization.

154198379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 47.

The square root of 154198379 is about 12417.6639912666. The cubic root of 154198379 is about 536.2409009854.

The spelling of 154198379 in words is "one hundred fifty-four million, one hundred ninety-eight thousand, three hundred seventy-nine".