1997763084 has 18 divisors (see below), whose sum is σ = 5049901220. Its totient is φ = 665921016.

The previous prime is 1997763083. The next prime is 1997763091. The reversal of 1997763084 is 4803677991.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1997763084.

It is not an unprimeable number, because it can be changed into a prime (1997763083) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27746674 + ... + 27746745.

Almost surely, 2^1997763084 is an apocalyptic number.

It is an amenable number.

1997763084 is an abundant number, since it is smaller than the sum of its proper divisors (3052138136).

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

1997763084 is a wasteful number, since it uses less digits than its factorization.

1997763084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55493429 (or 55493424 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The square root of 1997763084 is about 44696.3430718890. The cubic root of 1997763084 is about 1259.4511517383.

The spelling of 1997763084 in words is "one billion, nine hundred ninety-seven million, seven hundred sixty-three thousand, eighty-four".