1183786887137 has 4 divisors (see below), whose sum is σ = 1188956262420. Its totient is φ = 1178617511856.

The previous prime is 1183786887131. The next prime is 1183786887221. The reversal of 1183786887137 is 7317886873811.

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 947178579361 + 236608307776 = 973231^2 + 486424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1183786887137 - 2⁸ = 1183786886881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1183786887131) 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, 2584687298 + ... + 2584687755.

It is an arithmetic number, because the mean of its divisors is an integer number (297239065605).

Almost surely, 2^{1183786887137} is an apocalyptic number.

It is an amenable number.

1183786887137 is a deficient number, since it is larger than the sum of its proper divisors (5169375283).

1183786887137 is an equidigital number, since it uses as much as digits as its factorization.

1183786887137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169375282.

The product of its digits is 75866112, while the sum is 68.

The spelling of 1183786887137 in words is "one trillion, one hundred eighty-three billion, seven hundred eighty-six million, eight hundred eighty-seven thousand, one hundred thirty-seven".