1872421880 has 64 divisors (see below), whose sum is σ = 5068224000. Its totient is φ = 608183424.

The previous prime is 1872421877. The next prime is 1872421883. The reversal of 1872421880 is 881242781.

It is an interprime number because it is at equal distance from previous prime (1872421877) and next prime (1872421883).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872421883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170660 + ... + 181299.

It is an arithmetic number, because the mean of its divisors is an integer number (79191000).

Almost surely, 2^1872421880 is an apocalyptic number.

1872421880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872421880 is an abundant number, since it is smaller than the sum of its proper divisors (3195802120).

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

1872421880 is a wasteful number, since it uses less digits than its factorization.

1872421880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351996 (or 351992 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 41.

The square root of 1872421880 is about 43271.4903833922. The cubic root of 1872421880 is about 1232.5406054260.

It can be divided in two parts, 18724 and 21880, that added together give a palindrome (40604).

The spelling of 1872421880 in words is "one billion, eight hundred seventy-two million, four hundred twenty-one thousand, eight hundred eighty".