18542494 has 8 divisors (see below), whose sum is σ = 27847008. Its totient is φ = 9260160.

The previous prime is 18542479. The next prime is 18542497. The reversal of 18542494 is 49424581.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18542497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3267 + ... + 6910.

It is an arithmetic number, because the mean of its divisors is an integer number (3480876).

Almost surely, 2^18542494 is an apocalyptic number.

18542494 is a deficient number, since it is larger than the sum of its proper divisors (9304514).

18542494 is a wasteful number, since it uses less digits than its factorization.

18542494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11090.

The product of its digits is 46080, while the sum is 37.

The square root of 18542494 is about 4306.0996272729. The cubic root of 18542494 is about 264.6809688700.

The spelling of 18542494 in words is "eighteen million, five hundred forty-two thousand, four hundred ninety-four".