1820297016 has 64 divisors (see below), whose sum is σ = 5063719200. Its totient is φ = 605885184.

The previous prime is 1820296949. The next prime is 1820297021. The reversal of 1820297016 is 6107920281.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 152580 + ... + 164076.

Almost surely, 2^1820297016 is an apocalyptic number.

It is an amenable number.

1820297016 is an abundant number, since it is smaller than the sum of its proper divisors (3243422184).

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

1820297016 is a wasteful number, since it uses less digits than its factorization.

1820297016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12245 (or 12235 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1820297016 is about 42664.9389546030. The cubic root of 1820297016 is about 1220.9955628910.

The spelling of 1820297016 in words is "one billion, eight hundred twenty million, two hundred ninety-seven thousand, sixteen".