154120194 has 24 divisors (see below), whose sum is σ = 348446592. Its totient is φ = 49139640.

The previous prime is 154120193. The next prime is 154120201. The reversal of 154120194 is 491021451.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154120193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185722 + ... + 186549.

It is an arithmetic number, because the mean of its divisors is an integer number (14518608).

Almost surely, 2^154120194 is an apocalyptic number.

154120194 is an abundant number, since it is smaller than the sum of its proper divisors (194326398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

154120194 is a wasteful number, since it uses less digits than its factorization.

154120194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372302 (or 372299 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 154120194 is about 12414.5154557075. The cubic root of 154120194 is about 536.1502535065.

The spelling of 154120194 in words is "one hundred fifty-four million, one hundred twenty thousand, one hundred ninety-four".