1171704749 has 4 divisors (see below), whose sum is σ = 1233373440. Its totient is φ = 1110036060.

The previous prime is 1171704739. The next prime is 1171704763. The reversal of 1171704749 is 9474071711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1171704749 - 2²⁰ = 1170656173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171704739) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30834317 + ... + 30834354.

It is an arithmetic number, because the mean of its divisors is an integer number (308343360).

Almost surely, 2^1171704749 is an apocalyptic number.

1171704749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1171704749 is a deficient number, since it is larger than the sum of its proper divisors (61668691).

1171704749 is an equidigital number, since it uses as much as digits as its factorization.

1171704749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61668690.

The product of its (nonzero) digits is 49392, while the sum is 41.

The square root of 1171704749 is about 34230.1730787327. The cubic root of 1171704749 is about 1054.2397730639.

The spelling of 1171704749 in words is "one billion, one hundred seventy-one million, seven hundred four thousand, seven hundred forty-nine".