18472869 has 24 divisors (see below), whose sum is σ = 27951872. Its totient is φ = 11741760.

The previous prime is 18472859. The next prime is 18472873. The reversal of 18472869 is 96827481.

It is not a de Polignac number, because 18472869 - 2¹¹ = 18470821 is a prime.

It is a super-2 number, since 2×18472869² = 682493778182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18472849) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19914 + ... + 20820.

Almost surely, 2^18472869 is an apocalyptic number.

It is an amenable number.

18472869 is a deficient number, since it is larger than the sum of its proper divisors (9479003).

18472869 is a wasteful number, since it uses less digits than its factorization.

18472869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017 (or 1014 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 18472869 is about 4298.0075616499. The cubic root of 18472869 is about 264.3492708392.

The spelling of 18472869 in words is "eighteen million, four hundred seventy-two thousand, eight hundred sixty-nine".