1361982444 has 72 divisors (see below), whose sum is σ = 3403816752. Its totient is φ = 423582720.

The previous prime is 1361982439. The next prime is 1361982449. The reversal of 1361982444 is 4442891631.

It is an interprime number because it is at equal distance from previous prime (1361982439) and next prime (1361982449).

It is a junction number, because it is equal to n+sod(n) for n = 1361982396 and 1361982405.

It is not an unprimeable number, because it can be changed into a prime (1361982449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 257652 + ... + 262884.

Almost surely, 2^1361982444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361982444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1701908376).

1361982444 is an abundant number, since it is smaller than the sum of its proper divisors (2041834308).

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

1361982444 is a wasteful number, since it uses less digits than its factorization.

1361982444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327 (or 5302 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 1361982444 is about 36905.0463216076. The cubic root of 1361982444 is about 1108.4697263745.

The spelling of 1361982444 in words is "one billion, three hundred sixty-one million, nine hundred eighty-two thousand, four hundred forty-four".