1166778339 has 16 divisors (see below), whose sum is σ = 1625049600. Its totient is φ = 743250816.

The previous prime is 1166778329. The next prime is 1166778407. The reversal of 1166778339 is 9338776611.

It is not a de Polignac number, because 1166778339 - 2¹⁹ = 1166254051 is a prime.

It is a super-2 number, since 2×1166778339² = 2722743384719197842, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166778291 and 1166778300.

It is not an unprimeable number, because it can be changed into a prime (1166778329) 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, 61242 + ... + 78000.

It is an arithmetic number, because the mean of its divisors is an integer number (101565600).

Almost surely, 2^1166778339 is an apocalyptic number.

1166778339 is a deficient number, since it is larger than the sum of its proper divisors (458271261).

1166778339 is a wasteful number, since it uses less digits than its factorization.

1166778339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17794.

The product of its digits is 1143072, while the sum is 51.

The square root of 1166778339 is about 34158.1372296558. The cubic root of 1166778339 is about 1052.7601872337.

The spelling of 1166778339 in words is "one billion, one hundred sixty-six million, seven hundred seventy-eight thousand, three hundred thirty-nine".