2191473384 has 32 divisors (see below), whose sum is σ = 5479920000. Its totient is φ = 730326272.

The previous prime is 2191473367. The next prime is 2191473391. The reversal of 2191473384 is 4833741912.

2191473384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2191473384² = 9605111185560822912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147697 + ... + 161855.

It is an arithmetic number, because the mean of its divisors is an integer number (171247500).

Almost surely, 2^2191473384 is an apocalyptic number.

2191473384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2191473384 is an abundant number, since it is smaller than the sum of its proper divisors (3288446616).

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

2191473384 is a wasteful number, since it uses less digits than its factorization.

2191473384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20617 (or 20613 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 2191473384 is about 46813.1753249019. The cubic root of 2191473384 is about 1298.9090223655.

The spelling of 2191473384 in words is "two billion, one hundred ninety-one million, four hundred seventy-three thousand, three hundred eighty-four".