3187989819 has 80 divisors (see below), whose sum is σ = 5833648128. Its totient is φ = 1695152448.

The previous prime is 3187989793. The next prime is 3187989829. The reversal of 3187989819 is 9189897813.

It is not a de Polignac number, because 3187989819 - 2⁹ = 3187989307 is a prime.

It is a super-2 number, since 2×3187989819² = 20326558172095305522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (3187989829) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 479214 + ... + 485820.

Almost surely, 2^3187989819 is an apocalyptic number.

3187989819 is a deficient number, since it is larger than the sum of its proper divisors (2645658309).

3187989819 is a wasteful number, since it uses less digits than its factorization.

3187989819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6686 (or 6677 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 63.

The square root of 3187989819 is about 56462.2866965198. The cubic root of 3187989819 is about 1471.7667096604.

The spelling of 3187989819 in words is "three billion, one hundred eighty-seven million, nine hundred eighty-nine thousand, eight hundred nineteen".