1986212814 has 8 divisors (see below), whose sum is σ = 3972425640. Its totient is φ = 662070936.

The previous prime is 1986212807. The next prime is 1986212821. The reversal of 1986212814 is 4182126891.

It is an interprime number because it is at equal distance from previous prime (1986212807) and next prime (1986212821).

It is a sphenic number, since it is the product of 3 distinct primes.

1986212814 is an admirable number.

It is a Curzon number.

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, 165517729 + ... + 165517740.

It is an arithmetic number, because the mean of its divisors is an integer number (496553205).

Almost surely, 2^1986212814 is an apocalyptic number.

1986212814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1986212814 is a wasteful number, since it uses less digits than its factorization.

1986212814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331035474.

The product of its digits is 55296, while the sum is 42.

The square root of 1986212814 is about 44566.9475508476. The cubic root of 1986212814 is about 1257.0192440453.

The spelling of 1986212814 in words is "one billion, nine hundred eighty-six million, two hundred twelve thousand, eight hundred fourteen".