1160028778 has 4 divisors (see below), whose sum is σ = 1740043170. Its totient is φ = 580014388.

The previous prime is 1160028769. The next prime is 1160028781. The reversal of 1160028778 is 8778200611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8778200611 = 45691 ⋅192121.

It can be written as a sum of positive squares in only one way, i.e., 1139535049 + 20493729 = 33757^2 + 4527^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1160028778.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290007193 + ... + 290007196.

Almost surely, 2^1160028778 is an apocalyptic number.

1160028778 is a deficient number, since it is larger than the sum of its proper divisors (580014392).

1160028778 is an equidigital number, since it uses as much as digits as its factorization.

1160028778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580014391.

The product of its (nonzero) digits is 37632, while the sum is 40.

The square root of 1160028778 is about 34059.1952048195. The cubic root of 1160028778 is about 1050.7262633780.

The spelling of 1160028778 in words is "one billion, one hundred sixty million, twenty-eight thousand, seven hundred seventy-eight".