1181401167 has 16 divisors (see below), whose sum is σ = 1597881600. Its totient is φ = 776305152.

The previous prime is 1181401147. The next prime is 1181401181. The reversal of 1181401167 is 7611041811.

It is not a de Polignac number, because 1181401167 - 2¹² = 1181397071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1181401147) 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, 106518 + ... + 117084.

It is an arithmetic number, because the mean of its divisors is an integer number (99867600).

Almost surely, 2^1181401167 is an apocalyptic number.

1181401167 is a deficient number, since it is larger than the sum of its proper divisors (416480433).

1181401167 is a wasteful number, since it uses less digits than its factorization.

1181401167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11102.

The product of its (nonzero) digits is 1344, while the sum is 30.

The square root of 1181401167 is about 34371.5167980699. The cubic root of 1181401167 is about 1057.1399007544.

Adding to 1181401167 its reverse (7611041811), we get a palindrome (8792442978).

The spelling of 1181401167 in words is "one billion, one hundred eighty-one million, four hundred one thousand, one hundred sixty-seven".