1028165987203 has 2 divisors, whose sum is σ = 1028165987204. Its totient is φ = 1028165987202.

The previous prime is 1028165987117. The next prime is 1028165987209. The reversal of 1028165987203 is 3027895618201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1028165987203 is a prime.

It is a super-2 number, since 2×1028165987203² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1028165987209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514082993601 + 514082993602.

It is an arithmetic number, because the mean of its divisors is an integer number (514082993602).

Almost surely, 2^{1028165987203} is an apocalyptic number.

1028165987203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028165987203 is an equidigital number, since it uses as much as digits as its factorization.

1028165987203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 1028165987203 in words is "one trillion, twenty-eight billion, one hundred sixty-five million, nine hundred eighty-seven thousand, two hundred three".