1173973947 has 16 divisors (see below), whose sum is σ = 1659141792. Its totient is φ = 735825920.

The previous prime is 1173973873. The next prime is 1173973949. The reversal of 1173973947 is 7493793711.

It is a cyclic number.

It is not a de Polignac number, because 1173973947 - 2²⁰ = 1172925371 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 1173973947.

It is not an unprimeable number, because it can be changed into a prime (1173973949) 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, 38047 + ... + 61607.

It is an arithmetic number, because the mean of its divisors is an integer number (103696362).

Almost surely, 2^1173973947 is an apocalyptic number.

1173973947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1173973947 is a deficient number, since it is larger than the sum of its proper divisors (485167845).

1173973947 is a wasteful number, since it uses less digits than its factorization.

1173973947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24558.

The product of its digits is 1000188, while the sum is 51.

The square root of 1173973947 is about 34263.3032120372. The cubic root of 1173973947 is about 1054.9199034749.

The spelling of 1173973947 in words is "one billion, one hundred seventy-three million, nine hundred seventy-three thousand, nine hundred forty-seven".