1872985660 has 48 divisors (see below), whose sum is σ = 4840952256. Its totient is φ = 592768512.

The previous prime is 1872985649. The next prime is 1872985717. The reversal of 1872985660 is 665892781.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 1872985598 and 1872985607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512737 + ... + 516376.

It is an arithmetic number, because the mean of its divisors is an integer number (100853172).

Almost surely, 2^1872985660 is an apocalyptic number.

1872985660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872985660 is an abundant number, since it is smaller than the sum of its proper divisors (2967966596).

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

1872985660 is a wasteful number, since it uses less digits than its factorization.

1872985660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029142 (or 1029140 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 1872985660 is about 43278.0043440083. The cubic root of 1872985660 is about 1232.6642976379.

The spelling of 1872985660 in words is "one billion, eight hundred seventy-two million, nine hundred eighty-five thousand, six hundred sixty".