1986112992 has 96 divisors (see below), whose sum is σ = 5530345632. Its totient is φ = 621953024.

The previous prime is 1986112967. The next prime is 1986112993. The reversal of 1986112992 is 2992116891.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1986112993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1554658 + ... + 1555934.

It is an arithmetic number, because the mean of its divisors is an integer number (57607767).

Almost surely, 2^1986112992 is an apocalyptic number.

1986112992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1986112992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2765172816).

1986112992 is an abundant number, since it is smaller than the sum of its proper divisors (3544232640).

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

1986112992 is a wasteful number, since it uses less digits than its factorization.

1986112992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2252 counting only the distinct ones).

The product of its digits is 139968, while the sum is 48.

The square root of 1986112992 is about 44565.8276261083. The cubic root of 1986112992 is about 1256.9981854967.

The spelling of 1986112992 in words is "one billion, nine hundred eighty-six million, one hundred twelve thousand, nine hundred ninety-two".