215638083 has 12 divisors (see below), whose sum is σ = 312156000. Its totient is φ = 143445456.

The previous prime is 215638069. The next prime is 215638091. The reversal of 215638083 is 380836512.

215638083 is a `hidden beast` number, since 2 + 15 + 638 + 0 + 8 + 3 = 666.

It is not a de Polignac number, because 215638083 - 2¹² = 215633987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (215638483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21708 + ... + 30041.

It is an arithmetic number, because the mean of its divisors is an integer number (26013000).

Almost surely, 2^215638083 is an apocalyptic number.

215638083 is a deficient number, since it is larger than the sum of its proper divisors (96517917).

215638083 is a wasteful number, since it uses less digits than its factorization.

215638083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52218 (or 52215 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 215638083 is about 14684.6206283990. The cubic root of 215638083 is about 599.6647043296.

It can be divided in two parts, 21563 and 8083, that added together give a triangular number (29646 = T₂₄₃).

The spelling of 215638083 in words is "two hundred fifteen million, six hundred thirty-eight thousand, eighty-three".