1182138361 has 2 divisors, whose sum is σ = 1182138362. Its totient is φ = 1182138360.

The previous prime is 1182138343. The next prime is 1182138389. The reversal of 1182138361 is 1638312811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 726572025 + 455566336 = 26955^2 + 21344^2 .

It is an emirp because it is prime and its reverse (1638312811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1182138361 - 2⁷ = 1182138233 is a prime.

It is a super-2 number, since 2×1182138361² = 2794902209095532642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1182138301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591069180 + 591069181.

It is an arithmetic number, because the mean of its divisors is an integer number (591069181).

Almost surely, 2^1182138361 is an apocalyptic number.

It is an amenable number.

1182138361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1182138361 is an equidigital number, since it uses as much as digits as its factorization.

1182138361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 1182138361 is about 34382.2390341292. The cubic root of 1182138361 is about 1057.3597400356.

The spelling of 1182138361 in words is "one billion, one hundred eighty-two million, one hundred thirty-eight thousand, three hundred sixty-one".