1187364865 has 8 divisors (see below), whose sum is σ = 1442874240. Its totient is φ = 937867632.

The previous prime is 1187364863. The next prime is 1187364877. The reversal of 1187364865 is 5684637811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1187364865 - 2¹ = 1187364863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1187364863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502599 + ... + 1503388.

It is an arithmetic number, because the mean of its divisors is an integer number (180359280).

Almost surely, 2^1187364865 is an apocalyptic number.

It is an amenable number.

1187364865 is a deficient number, since it is larger than the sum of its proper divisors (255509375).

1187364865 is an equidigital number, since it uses as much as digits as its factorization.

1187364865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006071.

The product of its digits is 967680, while the sum is 49.

The square root of 1187364865 is about 34458.1610797791. The cubic root of 1187364865 is about 1058.9157255560.

The spelling of 1187364865 in words is "one billion, one hundred eighty-seven million, three hundred sixty-four thousand, eight hundred sixty-five".