18880069 has 8 divisors (see below), whose sum is σ = 20431712. Its totient is φ = 17342640.

The previous prime is 18880061. The next prime is 18880087. The reversal of 18880069 is 96008881.

It is a happy number.

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 18880069 - 2³ = 18880061 is a prime.

It is a super-2 number, since 2×18880069² = 712914010889522, 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 (18880061) 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, 699 + ... + 6184.

It is an arithmetic number, because the mean of its divisors is an integer number (2553964).

Almost surely, 2^18880069 is an apocalyptic number.

It is an amenable number.

18880069 is a deficient number, since it is larger than the sum of its proper divisors (1551643).

18880069 is a wasteful number, since it uses less digits than its factorization.

18880069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7107.

The product of its (nonzero) digits is 27648, while the sum is 40.

The square root of 18880069 is about 4345.1201364289. The cubic root of 18880069 is about 266.2775336496.

The spelling of 18880069 in words is "eighteen million, eight hundred eighty thousand, sixty-nine".