2819153820 has 48 divisors (see below), whose sum is σ = 9021293568. Its totient is φ = 644377920.

The previous prime is 2819153801. The next prime is 2819153833. The reversal of 2819153820 is 283519182.

It is a congruent number.

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, 3355716 + ... + 3356555.

It is an arithmetic number, because the mean of its divisors is an integer number (187943616).

Almost surely, 2^2819153820 is an apocalyptic number.

2819153820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2819153820 is an abundant number, since it is smaller than the sum of its proper divisors (6202139748).

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

2819153820 is a wasteful number, since it uses less digits than its factorization.

2819153820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6712290 (or 6712288 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 2819153820 is about 53095.7043460203. The cubic root of 2819153820 is about 1412.6663194135. Note that the first 3 decimals are identical.

The spelling of 2819153820 in words is "two billion, eight hundred nineteen million, one hundred fifty-three thousand, eight hundred twenty".