154189539 has 24 divisors (see below), whose sum is σ = 265604352. Its totient is φ = 84276720.

The previous prime is 154189513. The next prime is 154189577. The reversal of 154189539 is 935981451.

It is not a de Polignac number, because 154189539 - 2⁷ = 154189411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154189494 and 154189503.

It is not an unprimeable number, because it can be changed into a prime (154189039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51757 + ... + 54654.

It is an arithmetic number, because the mean of its divisors is an integer number (11066848).

Almost surely, 2^154189539 is an apocalyptic number.

154189539 is a deficient number, since it is larger than the sum of its proper divisors (111414813).

154189539 is a wasteful number, since it uses less digits than its factorization.

154189539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106447 (or 106444 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 154189539 is about 12417.3080416006. The cubic root of 154189539 is about 536.2306534498.

The spelling of 154189539 in words is "one hundred fifty-four million, one hundred eighty-nine thousand, five hundred thirty-nine".