1145188637 has 2 divisors, whose sum is σ = 1145188638. Its totient is φ = 1145188636.

The previous prime is 1145188621. The next prime is 1145188679. The reversal of 1145188637 is 7368815411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872079961 + 273108676 = 29531^2 + 16526^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145188637 - 2⁴ = 1145188621 is a prime.

It is a super-2 number, since 2×1145188637² = 2622914028627835538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1145188687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572594318 + 572594319.

It is an arithmetic number, because the mean of its divisors is an integer number (572594319).

Almost surely, 2^1145188637 is an apocalyptic number.

It is an amenable number.

1145188637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145188637 is an equidigital number, since it uses as much as digits as its factorization.

1145188637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 1145188637 is about 33840.6358835055. The cubic root of 1145188637 is about 1046.2264050420.

The spelling of 1145188637 in words is "one billion, one hundred forty-five million, one hundred eighty-eight thousand, six hundred thirty-seven".