2191295040 has 112 divisors (see below), whose sum is σ = 7589885760. Its totient is φ = 531220480.

The previous prime is 2191295011. The next prime is 2191295063. The reversal of 2191295040 is 405921912.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 2191294992 and 2191295010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93195 + ... + 114314.

Almost surely, 2^2191295040 is an apocalyptic number.

2191295040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2191295040 is an abundant number, since it is smaller than the sum of its proper divisors (5398590720).

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

2191295040 is a wasteful number, since it uses less digits than its factorization.

2191295040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207540 (or 207530 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 2191295040 is about 46811.2704377909. The cubic root of 2191295040 is about 1298.8737859629.

The spelling of 2191295040 in words is "two billion, one hundred ninety-one million, two hundred ninety-five thousand, forty".