18698901 has 16 divisors (see below), whose sum is σ = 27093696. Its totient is φ = 11402496.

The previous prime is 18698899. The next prime is 18698909. The reversal of 18698901 is 10989681.

It is not a de Polignac number, because 18698901 - 2¹ = 18698899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18698909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2286 + ... + 6528.

It is an arithmetic number, because the mean of its divisors is an integer number (1693356).

Almost surely, 2^18698901 is an apocalyptic number.

It is an amenable number.

18698901 is a deficient number, since it is larger than the sum of its proper divisors (8394795).

18698901 is a wasteful number, since it uses less digits than its factorization.

18698901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 18698901 is about 4324.2225890904. Note that the first 3 decimals coincide. The cubic root of 18698901 is about 265.4230858808.

The spelling of 18698901 in words is "eighteen million, six hundred ninety-eight thousand, nine hundred one".