1361287444 has 48 divisors (see below), whose sum is σ = 2764371456. Its totient is φ = 579686400.

The previous prime is 1361287439. The next prime is 1361287489. The reversal of 1361287444 is 4447821631.

It is a junction number, because it is equal to n+sod(n) for n = 1361287397 and 1361287406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162724 + ... + 170884.

It is an arithmetic number, because the mean of its divisors is an integer number (57591072).

Almost surely, 2^1361287444 is an apocalyptic number.

It is an amenable number.

1361287444 is an abundant number, since it is smaller than the sum of its proper divisors (1403084012).

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

1361287444 is a wasteful number, since it uses less digits than its factorization.

1361287444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416 (or 8414 counting only the distinct ones).

The product of its digits is 129024, while the sum is 40.

The square root of 1361287444 is about 36895.6290636167. The cubic root of 1361287444 is about 1108.2811489227.

The spelling of 1361287444 in words is "one billion, three hundred sixty-one million, two hundred eighty-seven thousand, four hundred forty-four".