18010642 has 8 divisors (see below), whose sum is σ = 29094156. Its totient is φ = 8312592.

The previous prime is 18010639. The next prime is 18010661. The reversal of 18010642 is 24601081.

It can be written as a sum of positive squares in 2 ways, for example, as 17799961 + 210681 = 4219^2 + 459^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346333 + ... + 346384.

Almost surely, 2^18010642 is an apocalyptic number.

18010642 is a deficient number, since it is larger than the sum of its proper divisors (11083514).

18010642 is a wasteful number, since it uses less digits than its factorization.

18010642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692732.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 18010642 is about 4243.8946735281. The cubic root of 18010642 is about 262.1257772641.

The spelling of 18010642 in words is "eighteen million, ten thousand, six hundred forty-two".