1986162444 has 144 divisors (see below), whose sum is σ = 6023716608. Its totient is φ = 560478528.

The previous prime is 1986162443. The next prime is 1986162461. The reversal of 1986162444 is 4442616891.

1986162444 is a `hidden beast` number, since 1 + 9 + 8 + 616 + 24 + 4 + 4 = 666.

1986162444 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1986162444.

It is not an unprimeable number, because it can be changed into a prime (1986162443) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 562974 + ... + 566490.

Almost surely, 2^1986162444 is an apocalyptic number.

1986162444 is a gapful number since it is divisible by the number (14) 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 1986162444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3011858304).

1986162444 is an abundant number, since it is smaller than the sum of its proper divisors (4037554164).

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

1986162444 is a wasteful number, since it uses less digits than its factorization.

1986162444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3612 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 1986162444 is about 44566.3824423747. The cubic root of 1986162444 is about 1257.0086180281.

The spelling of 1986162444 in words is "one billion, nine hundred eighty-six million, one hundred sixty-two thousand, four hundred forty-four".