1163703978 has 48 divisors (see below), whose sum is σ = 2609568000. Its totient is φ = 374397120.

The previous prime is 1163703899. The next prime is 1163703997. The reversal of 1163703978 is 8793073611.

1163703978 is a `hidden beast` number, since 1 + 1 + 637 + 0 + 3 + 9 + 7 + 8 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 225673 + ... + 230771.

It is an arithmetic number, because the mean of its divisors is an integer number (54366000).

Almost surely, 2^1163703978 is an apocalyptic number.

1163703978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1163703978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1304784000).

1163703978 is an abundant number, since it is smaller than the sum of its proper divisors (1445864022).

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

1163703978 is a wasteful number, since it uses less digits than its factorization.

1163703978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547 (or 5544 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 45.

The square root of 1163703978 is about 34113.1056633664. The cubic root of 1163703978 is about 1051.8347296117.

The spelling of 1163703978 in words is "one billion, one hundred sixty-three million, seven hundred three thousand, nine hundred seventy-eight".