1187240564 has 12 divisors (see below), whose sum is σ = 2077921188. Its totient is φ = 593548800.

The previous prime is 1187240563. The next prime is 1187240609. The reversal of 1187240564 is 4650427811.

It can be written as a sum of positive squares in 2 ways, for example, as 733976464 + 453264100 = 27092^2 + 21290^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187240563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41174 + ... + 63794.

It is an arithmetic number, because the mean of its divisors is an integer number (173160099).

Almost surely, 2^1187240564 is an apocalyptic number.

It is an amenable number.

1187240564 is a deficient number, since it is larger than the sum of its proper divisors (890680624).

1187240564 is a wasteful number, since it uses less digits than its factorization.

1187240564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35746 (or 35744 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1187240564 is about 34456.3573814761. The cubic root of 1187240564 is about 1058.8787728942.

The spelling of 1187240564 in words is "one billion, one hundred eighty-seven million, two hundred forty thousand, five hundred sixty-four".