154540018 has 4 divisors (see below), whose sum is σ = 231810030. Its totient is φ = 77270008.

The previous prime is 154539961. The next prime is 154540033. The reversal of 154540018 is 810045451.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 95511529 + 59028489 = 9773^2 + 7683^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38635003 + ... + 38635006.

Almost surely, 2^154540018 is an apocalyptic number.

154540018 is a deficient number, since it is larger than the sum of its proper divisors (77270012).

154540018 is an equidigital number, since it uses as much as digits as its factorization.

154540018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77270011.

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 154540018 is about 12431.4125504707. The cubic root of 154540018 is about 536.6366372525.

Adding to 154540018 its reverse (810045451), we get a palindrome (964585469).

The spelling of 154540018 in words is "one hundred fifty-four million, five hundred forty thousand, eighteen".