18700289001 has 27 divisors (see below), whose sum is σ = 27405270711. Its totient is φ = 12287718144.

The previous prime is 18700288991. The next prime is 18700289057. The reversal of 18700289001 is 10098200781.

The square root of 18700289001 is 136749.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 18570875625 + 129413376 = 136275^2 + 11376^2 .

It is not a de Polignac number, because 18700289001 - 2¹⁵ = 18700256233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18700289071) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 32409225 + ... + 32409801.

Almost surely, 2^18700289001 is an apocalyptic number.

18700289001 is the 136749-th square number.

18700289001 is the 68375-th centered octagonal number.

It is an amenable number.

18700289001 is a deficient number, since it is larger than the sum of its proper divisors (8704981710).

18700289001 is an frugal number, since it uses more digits than its factorization.

18700289001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318 (or 659 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

Multiplying 18700289001 by its sum of digits (36), we get a square (673210404036 = 820494²).

Adding to 18700289001 its reverse (10098200781), we get a palindrome (28798489782).

The spelling of 18700289001 in words is "eighteen billion, seven hundred million, two hundred eighty-nine thousand, one".