2049398784 has 72 divisors (see below), whose sum is σ = 5919093180. Its totient is φ = 683126784.

The previous prime is 2049398759. The next prime is 2049398797. The reversal of 2049398784 is 4878939402.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 2049398784.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37162 + ... + 74025.

Almost surely, 2^2049398784 is an apocalyptic number.

2049398784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2049398784 is an abundant number, since it is smaller than the sum of its proper divisors (3869694396).

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

2049398784 is a wasteful number, since it uses less digits than its factorization.

2049398784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111215 (or 111192 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The square root of 2049398784 is about 45270.2858837892. The cubic root of 2049398784 is about 1270.2098944218.

The spelling of 2049398784 in words is "two billion, forty-nine million, three hundred ninety-eight thousand, seven hundred eighty-four".