1872620380 has 48 divisors (see below), whose sum is σ = 4242430080. Its totient is φ = 691678208.

The previous prime is 1872620377. The next prime is 1872620381. The reversal of 1872620380 is 830262781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872620381) 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, 33940 + ... + 69979.

It is an arithmetic number, because the mean of its divisors is an integer number (88383960).

Almost surely, 2^1872620380 is an apocalyptic number.

1872620380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1872620380 is an abundant number, since it is smaller than the sum of its proper divisors (2369809700).

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

1872620380 is a wasteful number, since it uses less digits than its factorization.

1872620380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103998 (or 103996 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 1872620380 is about 43273.7839806042. The cubic root of 1872620380 is about 1232.5841587633.

The spelling of 1872620380 in words is "one billion, eight hundred seventy-two million, six hundred twenty thousand, three hundred eighty".