18956069 has 8 divisors (see below), whose sum is σ = 20714400. Its totient is φ = 17203600.

The previous prime is 18956057. The next prime is 18956107. The reversal of 18956069 is 96065981.

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 18956069 - 2²⁰ = 17907493 is a prime.

It is a super-2 number, since 2×18956069² = 718665103865522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18956009) 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, 7982 + ... + 10080.

It is an arithmetic number, because the mean of its divisors is an integer number (2589300).

Almost surely, 2^18956069 is an apocalyptic number.

It is an amenable number.

18956069 is a deficient number, since it is larger than the sum of its proper divisors (1758331).

18956069 is a wasteful number, since it uses less digits than its factorization.

18956069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 18956069 is about 4353.8567959913. The cubic root of 18956069 is about 266.6343472984.

The spelling of 18956069 in words is "eighteen million, nine hundred fifty-six thousand, sixty-nine".