1166678445 has 8 divisors (see below), whose sum is σ = 1866685536. Its totient is φ = 622228496.

The previous prime is 1166678419. The next prime is 1166678501. The reversal of 1166678445 is 5448766611.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166678445 - 2⁹ = 1166677933 is a prime.

It is a super-2 number, since 2×1166678445² = 2722277188055236050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166678394 and 1166678403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38889267 + ... + 38889296.

It is an arithmetic number, because the mean of its divisors is an integer number (233335692).

Almost surely, 2^1166678445 is an apocalyptic number.

1166678445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166678445 is a deficient number, since it is larger than the sum of its proper divisors (700007091).

1166678445 is an equidigital number, since it uses as much as digits as its factorization.

1166678445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77778571.

The product of its digits is 967680, while the sum is 48.

The square root of 1166678445 is about 34156.6749699089. The cubic root of 1166678445 is about 1052.7301422731.

The spelling of 1166678445 in words is "one billion, one hundred sixty-six million, six hundred seventy-eight thousand, four hundred forty-five".