1361086818 has 96 divisors (see below), whose sum is σ = 3483212544. Its totient is φ = 351283968.

The previous prime is 1361086789. The next prime is 1361086849. The reversal of 1361086818 is 8186801631.

It is a super-2 number, since 2×1361086818² = 3705114652266730248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 1361086818.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 175846 + ... + 183422.

It is an arithmetic number, because the mean of its divisors is an integer number (36283464).

Almost surely, 2^1361086818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1361086818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741606272).

1361086818 is an abundant number, since it is smaller than the sum of its proper divisors (2122125726).

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

1361086818 is a wasteful number, since it uses less digits than its factorization.

1361086818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7656 (or 7649 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1361086818 is about 36892.9101318939. The cubic root of 1361086818 is about 1108.2267002367.

The spelling of 1361086818 in words is "one billion, three hundred sixty-one million, eighty-six thousand, eight hundred eighteen".