1163694478 has 4 divisors (see below), whose sum is σ = 1745541720. Its totient is φ = 581847238.

The previous prime is 1163694457. The next prime is 1163694481. The reversal of 1163694478 is 8744963611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8744963611 = 479 ⋅18256709.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 290923618 + ... + 290923621.

It is an arithmetic number, because the mean of its divisors is an integer number (436385430).

Almost surely, 2^1163694478 is an apocalyptic number.

1163694478 is a deficient number, since it is larger than the sum of its proper divisors (581847242).

1163694478 is an equidigital number, since it uses as much as digits as its factorization.

1163694478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581847241.

The product of its digits is 870912, while the sum is 49.

The square root of 1163694478 is about 34112.9664204097. The cubic root of 1163694478 is about 1051.8318673554.

The spelling of 1163694478 in words is "one billion, one hundred sixty-three million, six hundred ninety-four thousand, four hundred seventy-eight".