2098187820 has 48 divisors (see below), whose sum is σ = 6527697120. Its totient is φ = 559516608.

The previous prime is 2098187807. The next prime is 2098187851. The reversal of 2098187820 is 287818902.

It is a happy number.

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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1942227 + ... + 1943306.

It is an arithmetic number, because the mean of its divisors is an integer number (135993690).

Almost surely, 2^2098187820 is an apocalyptic number.

2098187820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2098187820 is an abundant number, since it is smaller than the sum of its proper divisors (4429509300).

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

2098187820 is a wasteful number, since it uses less digits than its factorization.

2098187820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3885551 (or 3885543 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The square root of 2098187820 is about 45805.9801772651. The cubic root of 2098187820 is about 1280.2107034323.

It can be divided in two parts, 20981 and 87820, that added together give a palindrome (108801).

The spelling of 2098187820 in words is "two billion, ninety-eight million, one hundred eighty-seven thousand, eight hundred twenty".