2691442784 has 24 divisors (see below), whose sum is σ = 5365856160. Its totient is φ = 1328685696.

The previous prime is 2691442781. The next prime is 2691442807. The reversal of 2691442784 is 4872441962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2691442781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529799 + ... + 534854.

It is an arithmetic number, because the mean of its divisors is an integer number (223577340).

Almost surely, 2^2691442784 is an apocalyptic number.

It is an amenable number.

2691442784 is a deficient number, since it is larger than the sum of its proper divisors (2674413376).

2691442784 is a wasteful number, since it uses less digits than its factorization.

2691442784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064742 (or 1064734 counting only the distinct ones).

The product of its digits is 774144, while the sum is 47.

The square root of 2691442784 is about 51879.1170318077. The cubic root of 2691442784 is about 1391.0040162561.

The spelling of 2691442784 in words is "two billion, six hundred ninety-one million, four hundred forty-two thousand, seven hundred eighty-four".