1187507513089 has 4 divisors (see below), whose sum is σ = 1187516227540. Its totient is φ = 1187498798640.

The previous prime is 1187507513033. The next prime is 1187507513107. The reversal of 1187507513089 is 9803157057811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 690256887489 + 497250625600 = 830817^2 + 705160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1187507513089 - 2²³ = 1187499124481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1187507513389) 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, 4149522 + ... + 4426459.

It is an arithmetic number, because the mean of its divisors is an integer number (296879056885).

Almost surely, 2^{1187507513089} is an apocalyptic number.

It is an amenable number.

1187507513089 is a deficient number, since it is larger than the sum of its proper divisors (8714451).

1187507513089 is an equidigital number, since it uses as much as digits as its factorization.

1187507513089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8714450.

The product of its (nonzero) digits is 2116800, while the sum is 55.

The spelling of 1187507513089 in words is "one trillion, one hundred eighty-seven billion, five hundred seven million, five hundred thirteen thousand, eighty-nine".