1662912888937 has 2 divisors, whose sum is σ = 1662912888938. Its totient is φ = 1662912888936.

The previous prime is 1662912888823. The next prime is 1662912888997. The reversal of 1662912888937 is 7398882192661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1362533260176 + 300379628761 = 1167276^2 + 548069^2 .

It is an emirp because it is prime and its reverse (7398882192661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1662912888937 - 2²⁷ = 1662778671209 is a prime.

It is not a weakly prime, because it can be changed into another prime (1662912888997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 831456444468 + 831456444469.

It is an arithmetic number, because the mean of its divisors is an integer number (831456444469).

Almost surely, 2^{1662912888937} is an apocalyptic number.

It is an amenable number.

1662912888937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1662912888937 is an equidigital number, since it uses as much as digits as its factorization.

1662912888937 is an evil number, because the sum of its binary digits is even.

The product of its digits is 125411328, while the sum is 70.

The spelling of 1662912888937 in words is "one trillion, six hundred sixty-two billion, nine hundred twelve million, eight hundred eighty-eight thousand, nine hundred thirty-seven".