18713290 has 16 divisors (see below), whose sum is σ = 35457120. Its totient is φ = 7091280.

The previous prime is 18713287. The next prime is 18713291. The reversal of 18713290 is 9231781.

It is not an unprimeable number, because it can be changed into a prime (18713291) 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, 49056 + ... + 49435.

It is an arithmetic number, because the mean of its divisors is an integer number (2216070).

Almost surely, 2^18713290 is an apocalyptic number.

18713290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18713290 is a deficient number, since it is larger than the sum of its proper divisors (16743830).

18713290 is a wasteful number, since it uses less digits than its factorization.

18713290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98517.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 18713290 is about 4325.8860364092. The cubic root of 18713290 is about 265.4911503724.

The spelling of 18713290 in words is "eighteen million, seven hundred thirteen thousand, two hundred ninety".