2047391868 has 12 divisors (see below), whose sum is σ = 4777247720. Its totient is φ = 682463952.

The previous prime is 2047391833. The next prime is 2047391891. The reversal of 2047391868 is 8681937402.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2047391868² = 8383626922305058848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85307983 + ... + 85308006.

Almost surely, 2^2047391868 is an apocalyptic number.

It is an amenable number.

2047391868 is an abundant number, since it is smaller than the sum of its proper divisors (2729855852).

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

2047391868 is a wasteful number, since it uses less digits than its factorization.

2047391868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170615996 (or 170615994 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 2047391868 is about 45248.1145242539. The cubic root of 2047391868 is about 1269.7951325977.

The spelling of 2047391868 in words is "two billion, forty-seven million, three hundred ninety-one thousand, eight hundred sixty-eight".