1872736640 has 32 divisors (see below), whose sum is σ = 4477012560. Its totient is φ = 749094400.

The previous prime is 1872736639. The next prime is 1872736669. The reversal of 1872736640 is 466372781.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 1872736591 and 1872736600.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1462436 + ... + 1463715.

Almost surely, 2^1872736640 is an apocalyptic number.

1872736640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872736640 is an abundant number, since it is smaller than the sum of its proper divisors (2604275920).

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

1872736640 is an equidigital number, since it uses as much as digits as its factorization.

1872736640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2926170 (or 2926158 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 1872736640 is about 43275.1272672883. The cubic root of 1872736640 is about 1232.6096662056.

The spelling of 1872736640 in words is "one billion, eight hundred seventy-two million, seven hundred thirty-six thousand, six hundred forty".