154445994 has 32 divisors (see below), whose sum is σ = 343656000. Its totient is φ = 51415632.

The previous prime is 154445959. The next prime is 154446001. The reversal of 154445994 is 499544451.

154445994 is a `hidden beast` number, since 1 + 54 + 4 + 4 + 599 + 4 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58597 + ... + 61175.

It is an arithmetic number, because the mean of its divisors is an integer number (10739250).

Almost surely, 2^154445994 is an apocalyptic number.

154445994 is an abundant number, since it is smaller than the sum of its proper divisors (189210006).

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

154445994 is a wasteful number, since it uses less digits than its factorization.

154445994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 3693 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 154445994 is about 12427.6302648574. The cubic root of 154445994 is about 536.5277831186.

The spelling of 154445994 in words is "one hundred fifty-four million, four hundred forty-five thousand, nine hundred ninety-four".