18698001 has 16 divisors (see below), whose sum is σ = 28884864. Its totient is φ = 10537344.

The previous prime is 18697967. The next prime is 18698027. The reversal of 18698001 is 10089681.

It is not a de Polignac number, because 18698001 - 2¹¹ = 18695953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18698041) 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, 4566 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (1805304).

Almost surely, 2^18698001 is an apocalyptic number.

It is an amenable number.

18698001 is a deficient number, since it is larger than the sum of its proper divisors (10186863).

18698001 is a wasteful number, since it uses less digits than its factorization.

18698001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12280.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 18698001 is about 4324.1185228900. The cubic root of 18698001 is about 265.4188274379.

It can be divided in two parts, 1869 and 8001, that added together give a triangular number (9870 = T₁₄₀).

The spelling of 18698001 in words is "eighteen million, six hundred ninety-eight thousand, one".