2191872414 has 16 divisors (see below), whose sum is σ = 4614468480. Its totient is φ = 692170200.

The previous prime is 2191872367. The next prime is 2191872421. The reversal of 2191872414 is 4142781912.

It is a Curzon number.

It is a congruent number.

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, 9613362 + ... + 9613589.

It is an arithmetic number, because the mean of its divisors is an integer number (288404280).

Almost surely, 2^2191872414 is an apocalyptic number.

2191872414 is an abundant number, since it is smaller than the sum of its proper divisors (2422596066).

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

2191872414 is a wasteful number, since it uses less digits than its factorization.

2191872414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19226975.

The product of its digits is 32256, while the sum is 39.

The square root of 2191872414 is about 46817.4370720995. The cubic root of 2191872414 is about 1298.9878539887.

The spelling of 2191872414 in words is "two billion, one hundred ninety-one million, eight hundred seventy-two thousand, four hundred fourteen".