2820185542 has 32 divisors (see below), whose sum is σ = 4513384800. Its totient is φ = 1317811968.

The previous prime is 2820185527. The next prime is 2820185569. The reversal of 2820185542 is 2455810282.

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, 2207808 + ... + 2209084.

It is an arithmetic number, because the mean of its divisors is an integer number (141043275).

Almost surely, 2^2820185542 is an apocalyptic number.

2820185542 is a deficient number, since it is larger than the sum of its proper divisors (1693199258).

2820185542 is a wasteful number, since it uses less digits than its factorization.

2820185542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040.

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 2820185542 is about 53105.4191396697. The cubic root of 2820185542 is about 1412.8386289376.

The spelling of 2820185542 in words is "two billion, eight hundred twenty million, one hundred eighty-five thousand, five hundred forty-two".