1159196381 has 24 divisors (see below), whose sum is σ = 1402583040. Its totient is φ = 954088800.

The previous prime is 1159196369. The next prime is 1159196387. The reversal of 1159196381 is 1836919511.

It is not a de Polignac number, because 1159196381 - 2²⁶ = 1092087517 is a prime.

It is a super-2 number, since 2×1159196381² = 2687472499446994322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1159196387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 269276 + ... + 273546.

It is an arithmetic number, because the mean of its divisors is an integer number (58440960).

Almost surely, 2^1159196381 is an apocalyptic number.

It is an amenable number.

1159196381 is a deficient number, since it is larger than the sum of its proper divisors (243386659).

1159196381 is a wasteful number, since it uses less digits than its factorization.

1159196381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4505 (or 4498 counting only the distinct ones).

The product of its digits is 58320, while the sum is 44.

The square root of 1159196381 is about 34046.9731547461. The cubic root of 1159196381 is about 1050.4748814902.

The spelling of 1159196381 in words is "one billion, one hundred fifty-nine million, one hundred ninety-six thousand, three hundred eighty-one".