2149686744 has 32 divisors (see below), whose sum is σ = 5505297840. Its totient is φ = 699084800.

The previous prime is 2149686641. The next prime is 2149686761. The reversal of 2149686744 is 4476869412.

It is a happy 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, 1091337 + ... + 1093304.

Almost surely, 2^2149686744 is an apocalyptic number.

2149686744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2149686744 is an abundant number, since it is smaller than the sum of its proper divisors (3355611096).

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

2149686744 is a wasteful number, since it uses less digits than its factorization.

2149686744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184691 (or 2184687 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 51.

The square root of 2149686744 is about 46364.7144281079. The cubic root of 2149686744 is about 1290.6001942354.

The spelling of 2149686744 in words is "two billion, one hundred forty-nine million, six hundred eighty-six thousand, seven hundred forty-four".