2389781500 has 24 divisors (see below), whose sum is σ = 5219283888. Its totient is φ = 955912400.

The previous prime is 2389781497. The next prime is 2389781539. The reversal of 2389781500 is 51879832.

It is a super-2 number, since 2×2389781500² = 11422111235484500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2389282 + ... + 2390281.

It is an arithmetic number, because the mean of its divisors is an integer number (217470162).

Almost surely, 2^2389781500 is an apocalyptic number.

2389781500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2389781500 is an abundant number, since it is smaller than the sum of its proper divisors (2829502388).

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

2389781500 is a wasteful number, since it uses less digits than its factorization.

2389781500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4779582 (or 4779570 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 2389781500 is about 48885.3914784366. The cubic root of 2389781500 is about 1336.9630301484.

The spelling of 2389781500 in words is "two billion, three hundred eighty-nine million, seven hundred eighty-one thousand, five hundred".