1986854996 has 24 divisors (see below), whose sum is σ = 4021590720. Its totient is φ = 841249152.

The previous prime is 1986854993. The next prime is 1986854999. The reversal of 1986854996 is 6994586891.

It is an interprime number because it is at equal distance from previous prime (1986854993) and next prime (1986854999).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986854993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425141 + ... + 429788.

It is an arithmetic number, because the mean of its divisors is an integer number (167566280).

Almost surely, 2^1986854996 is an apocalyptic number.

It is an amenable number.

1986854996 is an abundant number, since it is smaller than the sum of its proper divisors (2034735724).

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

1986854996 is a wasteful number, since it uses less digits than its factorization.

1986854996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855023 (or 855021 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 65.

The square root of 1986854996 is about 44574.1516576592. The cubic root of 1986854996 is about 1257.1547025325.

The spelling of 1986854996 in words is "one billion, nine hundred eighty-six million, eight hundred fifty-four thousand, nine hundred ninety-six".