18490147 has 8 divisors (see below), whose sum is σ = 20002640. Its totient is φ = 16990560.

The previous prime is 18490127. The next prime is 18490151. The reversal of 18490147 is 74109481.

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

It is a cyclic number.

It is not a de Polignac number, because 18490147 - 2⁷ = 18490019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18490117) 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, 129 + ... + 6082.

It is an arithmetic number, because the mean of its divisors is an integer number (2500330).

Almost surely, 2^18490147 is an apocalyptic number.

18490147 is a deficient number, since it is larger than the sum of its proper divisors (1512493).

18490147 is a wasteful number, since it uses less digits than its factorization.

18490147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6453.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18490147 is about 4300.0170929893. The cubic root of 18490147 is about 264.4316620014.

The spelling of 18490147 in words is "eighteen million, four hundred ninety thousand, one hundred forty-seven".