1392286243987 has 4 divisors (see below), whose sum is σ = 1393682720656. Its totient is φ = 1390889767320.

The previous prime is 1392286243981. The next prime is 1392286244003. The reversal of 1392286243987 is 7893426822931.

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

It is a cyclic number.

It is not a de Polignac number, because 1392286243987 - 2¹¹ = 1392286241939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392286243981) 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, 698236839 + ... + 698238832.

It is an arithmetic number, because the mean of its divisors is an integer number (348420680164).

Almost surely, 2^{1392286243987} is an apocalyptic number.

1392286243987 is a deficient number, since it is larger than the sum of its proper divisors (1396476669).

1392286243987 is an equidigital number, since it uses as much as digits as its factorization.

1392286243987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396476668.

The product of its digits is 62705664, while the sum is 64.

The spelling of 1392286243987 in words is "one trillion, three hundred ninety-two billion, two hundred eighty-six million, two hundred forty-three thousand, nine hundred eighty-seven".