1189240537 has 2 divisors, whose sum is σ = 1189240538. Its totient is φ = 1189240536.

The previous prime is 1189240531. The next prime is 1189240597. The reversal of 1189240537 is 7350429811.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1155728016 + 33512521 = 33996^2 + 5789^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189240537 - 2³ = 1189240529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1189240537.

It is not a weakly prime, because it can be changed into another prime (1189240531) 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, 594620268 + 594620269.

It is an arithmetic number, because the mean of its divisors is an integer number (594620269).

Almost surely, 2^1189240537 is an apocalyptic number.

It is an amenable number.

1189240537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189240537 is an equidigital number, since it uses as much as digits as its factorization.

1189240537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1189240537 is about 34485.3669981921. The cubic root of 1189240537 is about 1059.4730194712.

The spelling of 1189240537 in words is "one billion, one hundred eighty-nine million, two hundred forty thousand, five hundred thirty-seven".