154189894 has 8 divisors (see below), whose sum is σ = 232253280. Its totient is φ = 76772136.

The previous prime is 154189891. The next prime is 154189901. The reversal of 154189894 is 498981451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154189891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160809 + ... + 161764.

It is an arithmetic number, because the mean of its divisors is an integer number (29031660).

Almost surely, 2^154189894 is an apocalyptic number.

154189894 is a deficient number, since it is larger than the sum of its proper divisors (78063386).

154189894 is a wasteful number, since it uses less digits than its factorization.

154189894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322814.

The product of its digits is 414720, while the sum is 49.

The square root of 154189894 is about 12417.3223361561. The cubic root of 154189894 is about 536.2310649816.

The spelling of 154189894 in words is "one hundred fifty-four million, one hundred eighty-nine thousand, eight hundred ninety-four".