18490270 has 16 divisors (see below), whose sum is σ = 33991488. Its totient is φ = 7238560.

The previous prime is 18490267. The next prime is 18490279. The reversal of 18490270 is 7209481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18490279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19201 + ... + 20140.

It is an arithmetic number, because the mean of its divisors is an integer number (2124468).

Almost surely, 2^18490270 is an apocalyptic number.

18490270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18490270 is a deficient number, since it is larger than the sum of its proper divisors (15501218).

18490270 is a wasteful number, since it uses less digits than its factorization.

18490270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39395.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18490270 is about 4300.0313952342. The cubic root of 18490270 is about 264.4322483502.

The spelling of 18490270 in words is "eighteen million, four hundred ninety thousand, two hundred seventy".