1171003149 has 24 divisors (see below), whose sum is σ = 1783847520. Its totient is φ = 767427696.

The previous prime is 1171003139. The next prime is 1171003181. The reversal of 1171003149 is 9413001711.

It is not a de Polignac number, because 1171003149 - 2²⁵ = 1137448717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1171003139) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26502 + ... + 55175.

It is an arithmetic number, because the mean of its divisors is an integer number (74326980).

Almost surely, 2^1171003149 is an apocalyptic number.

It is an amenable number.

1171003149 is a deficient number, since it is larger than the sum of its proper divisors (612844371).

1171003149 is an frugal number, since it uses more digits than its factorization.

1171003149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81751 (or 81739 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 27.

The square root of 1171003149 is about 34219.9232757761. The cubic root of 1171003149 is about 1054.0293098319.

The spelling of 1171003149 in words is "one billion, one hundred seventy-one million, three thousand, one hundred forty-nine".