1118706380 has 48 divisors (see below), whose sum is σ = 2581631136. Its totient is φ = 403822080.

The previous prime is 1118706373. The next prime is 1118706383. The reversal of 1118706380 is 836078111.

It is a self number, because there is not a number n which added to its sum of digits gives 1118706380.

It is not an unprimeable number, because it can be changed into a prime (1118706383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11582 + ... + 48698.

It is an arithmetic number, because the mean of its divisors is an integer number (53783982).

Almost surely, 2^1118706380 is an apocalyptic number.

1118706380 is a gapful number since it is divisible by the number (10) 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 1118706380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1290815568).

1118706380 is an abundant number, since it is smaller than the sum of its proper divisors (1462924756).

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

1118706380 is a wasteful number, since it uses less digits than its factorization.

1118706380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37274 (or 37272 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 1118706380 is about 33447.0683319181. The cubic root of 1118706380 is about 1038.0988381077.

The spelling of 1118706380 in words is "one billion, one hundred eighteen million, seven hundred six thousand, three hundred eighty".