2149973240 has 16 divisors (see below), whose sum is σ = 4837439880. Its totient is φ = 859989280.

The previous prime is 2149973239. The next prime is 2149973257. The reversal of 2149973240 is 423799412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26874626 + ... + 26874705.

Almost surely, 2^2149973240 is an apocalyptic number.

2149973240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2149973240 is an abundant number, since it is smaller than the sum of its proper divisors (2687466640).

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

2149973240 is a wasteful number, since it uses less digits than its factorization.

2149973240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53749342 (or 53749338 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 2149973240 is about 46367.8039160795. The cubic root of 2149973240 is about 1290.6575259016.

The spelling of 2149973240 in words is "two billion, one hundred forty-nine million, nine hundred seventy-three thousand, two hundred forty".