1116777840 has 80 divisors (see below), whose sum is σ = 3527372448. Its totient is φ = 292185088.

The previous prime is 1116777833. The next prime is 1116777869. The reversal of 1116777840 is 487776111.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1116777792 and 1116777801.

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, 31179 + ... + 56618.

Almost surely, 2^1116777840 is an apocalyptic number.

1116777840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1116777840 is an abundant number, since it is smaller than the sum of its proper divisors (2410594608).

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

1116777840 is a wasteful number, since it uses less digits than its factorization.

1116777840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87866 (or 87860 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 42.

The square root of 1116777840 is about 33418.2261647742. The cubic root of 1116777840 is about 1037.5019681581.

The spelling of 1116777840 in words is "one billion, one hundred sixteen million, seven hundred seventy-seven thousand, eight hundred forty".