1868840292 has 24 divisors (see below), whose sum is σ = 4757048352. Its totient is φ = 566315200.

The previous prime is 1868840291. The next prime is 1868840299. The reversal of 1868840292 is 2920488681.

It is not an unprimeable number, because it can be changed into a prime (1868840291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7078809 + ... + 7079072.

It is an arithmetic number, because the mean of its divisors is an integer number (198210348).

Almost surely, 2^1868840292 is an apocalyptic number.

1868840292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1868840292 is an abundant number, since it is smaller than the sum of its proper divisors (2888208060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868840292 is a wasteful number, since it uses less digits than its factorization.

1868840292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14157899 (or 14157897 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 48.

The square root of 1868840292 is about 43230.0854960987. The cubic root of 1868840292 is about 1231.7542316652.

The spelling of 1868840292 in words is "one billion, eight hundred sixty-eight million, eight hundred forty thousand, two hundred ninety-two".