1988274804 has 12 divisors (see below), whose sum is σ = 4639307904. Its totient is φ = 662758264.

The previous prime is 1988274773. The next prime is 1988274811. The reversal of 1988274804 is 4084728891.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82844772 + ... + 82844795.

It is an arithmetic number, because the mean of its divisors is an integer number (386608992).

Almost surely, 2^1988274804 is an apocalyptic number.

It is an amenable number.

1988274804 is an abundant number, since it is smaller than the sum of its proper divisors (2651033100).

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

1988274804 is a wasteful number, since it uses less digits than its factorization.

1988274804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165689574 (or 165689572 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 51.

The square root of 1988274804 is about 44590.0751737424. The cubic root of 1988274804 is about 1257.4540857803.

The spelling of 1988274804 in words is "one billion, nine hundred eighty-eight million, two hundred seventy-four thousand, eight hundred four".