1182890987 has 2 divisors, whose sum is σ = 1182890988. Its totient is φ = 1182890986.

The previous prime is 1182890953. The next prime is 1182890993. The reversal of 1182890987 is 7890982811.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7890982811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1182890987 - 2¹² = 1182886891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1182890927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 591445493 + 591445494.

It is an arithmetic number, because the mean of its divisors is an integer number (591445494).

Almost surely, 2^1182890987 is an apocalyptic number.

1182890987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1182890987 is an equidigital number, since it uses as much as digits as its factorization.

1182890987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 53.

The square root of 1182890987 is about 34393.1822749800. The cubic root of 1182890987 is about 1057.5840870417.

The spelling of 1182890987 in words is "one billion, one hundred eighty-two million, eight hundred ninety thousand, nine hundred eighty-seven".