1868133356 has 6 divisors (see below), whose sum is σ = 3269233380. Its totient is φ = 934066676.

The previous prime is 1868133353. The next prime is 1868133359. The reversal of 1868133356 is 6533318681.

It is an interprime number because it is at equal distance from previous prime (1868133353) and next prime (1868133359).

It is not an unprimeable number, because it can be changed into a prime (1868133353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233516666 + ... + 233516673.

It is an arithmetic number, because the mean of its divisors is an integer number (544872230).

Almost surely, 2^1868133356 is an apocalyptic number.

It is an amenable number.

1868133356 is a deficient number, since it is larger than the sum of its proper divisors (1401100024).

1868133356 is a wasteful number, since it uses less digits than its factorization.

1868133356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467033343 (or 467033341 counting only the distinct ones).

The product of its digits is 311040, while the sum is 44.

The square root of 1868133356 is about 43221.9082873489. The cubic root of 1868133356 is about 1231.5988980369.

The spelling of 1868133356 in words is "one billion, eight hundred sixty-eight million, one hundred thirty-three thousand, three hundred fifty-six".