18350146 has 4 divisors (see below), whose sum is σ = 27525222. Its totient is φ = 9175072.

The previous prime is 18350131. The next prime is 18350147. The reversal of 18350146 is 64105381.

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., 15249025 + 3101121 = 3905^2 + 1761^2 .

It is not an unprimeable number, because it can be changed into a prime (18350147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4587535 + ... + 4587538.

Almost surely, 2^18350146 is an apocalyptic number.

18350146 is a deficient number, since it is larger than the sum of its proper divisors (9175076).

18350146 is an equidigital number, since it uses as much as digits as its factorization.

18350146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9175075.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18350146 is about 4283.7070394694. The cubic root of 18350146 is about 263.7625754132.

It can be divided in two parts, 18350 and 146, that added together give a square (18496 = 136²).

The spelling of 18350146 in words is "eighteen million, three hundred fifty thousand, one hundred forty-six".