1078781814 has 120 divisors (see below), whose sum is σ = 2698359048. Its totient is φ = 319438080.

The previous prime is 1078781813. The next prime is 1078781827. The reversal of 1078781814 is 4181878701.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1078781814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078781813) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 11121414 + ... + 11121510.

Almost surely, 2^1078781814 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1078781814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349179524).

1078781814 is an abundant number, since it is smaller than the sum of its proper divisors (1619577234).

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

1078781814 is an equidigital number, since it uses as much as digits as its factorization.

1078781814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 45.

The square root of 1078781814 is about 32844.8141112109. The cubic root of 1078781814 is about 1025.5996694044.

The spelling of 1078781814 in words is "one billion, seventy-eight million, seven hundred eighty-one thousand, eight hundred fourteen".