2381687280 has 160 divisors (see below), whose sum is σ = 9375590400. Its totient is φ = 544382208.

The previous prime is 2381687239. The next prime is 2381687281. The reversal of 2381687280 is 827861832.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2381687281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63640 + ... + 93879.

It is an arithmetic number, because the mean of its divisors is an integer number (58597440).

Almost surely, 2^2381687280 is an apocalyptic number.

2381687280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2381687280 is an abundant number, since it is smaller than the sum of its proper divisors (6993903120).

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

2381687280 is a wasteful number, since it uses less digits than its factorization.

2381687280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157548 (or 157536 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 2381687280 is about 48802.5335407907. The cubic root of 2381687280 is about 1335.4518859073.

The spelling of 2381687280 in words is "two billion, three hundred eighty-one million, six hundred eighty-seven thousand, two hundred eighty".