30154018 has 4 divisors (see below), whose sum is σ = 45231030. Its totient is φ = 15077008.

The previous prime is 30154013. The next prime is 30154027. The reversal of 30154018 is 81045103.

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., 27321529 + 2832489 = 5227^2 + 1683^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30154018.

It is not an unprimeable number, because it can be changed into a prime (30154013) 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 as a sum of consecutive naturals, namely, 7538503 + ... + 7538506.

Almost surely, 2^30154018 is an apocalyptic number.

30154018 is a deficient number, since it is larger than the sum of its proper divisors (15077012).

30154018 is a wasteful number, since it uses less digits than its factorization.

30154018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15077011.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 30154018 is about 5491.2674311128. The cubic root of 30154018 is about 311.2540873535.

The spelling of 30154018 in words is "thirty million, one hundred fifty-four thousand, eighteen".