1187340965 has 8 divisors (see below), whose sum is σ = 1426348440. Its totient is φ = 948846592.

The previous prime is 1187340953. The next prime is 1187340971. The reversal of 1187340965 is 5690437811.

It can be written as a sum of positive squares in 4 ways, for example, as 171452836 + 1015888129 = 13094^2 + 31873^2 .

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 1187340965 - 2⁴ = 1187340949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123164 + ... + 132453.

It is an arithmetic number, because the mean of its divisors is an integer number (178293555).

Almost surely, 2^1187340965 is an apocalyptic number.

It is an amenable number.

1187340965 is a deficient number, since it is larger than the sum of its proper divisors (239007475).

1187340965 is an equidigital number, since it uses as much as digits as its factorization.

1187340965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256551.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1187340965 is about 34457.8142806534. The cubic root of 1187340965 is about 1058.9086206758.

The spelling of 1187340965 in words is "one billion, one hundred eighty-seven million, three hundred forty thousand, nine hundred sixty-five".