1290828915931 has 2 divisors, whose sum is σ = 1290828915932. Its totient is φ = 1290828915930.

The previous prime is 1290828915907. The next prime is 1290828915983. The reversal of 1290828915931 is 1395198280921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1290828915931 - 2¹¹ = 1290828913883 is a prime.

It is a super-2 number, since 2×1290828915931² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1290828918931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 645414457965 + 645414457966.

It is an arithmetic number, because the mean of its divisors is an integer number (645414457966).

Almost surely, 2^{1290828915931} is an apocalyptic number.

1290828915931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1290828915931 is an equidigital number, since it uses as much as digits as its factorization.

1290828915931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 58.

The spelling of 1290828915931 in words is "one trillion, two hundred ninety billion, eight hundred twenty-eight million, nine hundred fifteen thousand, nine hundred thirty-one".