2856366989 has 8 divisors (see below), whose sum is σ = 3275055168. Its totient is φ = 2440337760.

The previous prime is 2856366943. The next prime is 2856367027. The reversal of 2856366989 is 9896636582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2856366989 - 2¹⁶ = 2856301453 is a prime.

It is a super-2 number, since 2×2856366989² = 16317664751697852242, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2856362989) 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, 662432 + ... + 666729.

It is an arithmetic number, because the mean of its divisors is an integer number (409381896).

Almost surely, 2^2856366989 is an apocalyptic number.

It is an amenable number.

2856366989 is a deficient number, since it is larger than the sum of its proper divisors (418688179).

2856366989 is a wasteful number, since it uses less digits than its factorization.

2856366989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329475.

The product of its digits is 33592320, while the sum is 62.

The square root of 2856366989 is about 53444.9903077922. The cubic root of 2856366989 is about 1418.8549568727.

The spelling of 2856366989 in words is "two billion, eight hundred fifty-six million, three hundred sixty-six thousand, nine hundred eighty-nine".