1171949994 has 24 divisors (see below), whose sum is σ = 2544799140. Its totient is φ = 389792448.

The previous prime is 1171949969. The next prime is 1171950019. The reversal of 1171949994 is 4999491711.

It is an interprime number because it is at equal distance from previous prime (1171949969) and next prime (1171950019).

It can be written as a sum of positive squares in 2 ways, for example, as 1152263025 + 19686969 = 33945^2 + 4437^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1171949994.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63009 + ... + 79460.

Almost surely, 2^1171949994 is an apocalyptic number.

1171949994 is an abundant number, since it is smaller than the sum of its proper divisors (1372849146).

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

1171949994 is a wasteful number, since it uses less digits than its factorization.

1171949994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142934 (or 142931 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 1171949994 is about 34233.7551840285. The cubic root of 1171949994 is about 1054.3133208859.

The spelling of 1171949994 in words is "one billion, one hundred seventy-one million, nine hundred forty-nine thousand, nine hundred ninety-four".