1085912531819 has 2 divisors, whose sum is σ = 1085912531820. Its totient is φ = 1085912531818.

The previous prime is 1085912531813. The next prime is 1085912531861. The reversal of 1085912531819 is 9181352195801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085912531819 - 2¹² = 1085912527723 is a prime.

It is a super-2 number, since 2×1085912531819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1085912531813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542956265909 + 542956265910.

It is an arithmetic number, because the mean of its divisors is an integer number (542956265910).

Almost surely, 2^{1085912531819} is an apocalyptic number.

1085912531819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085912531819 is an equidigital number, since it uses as much as digits as its factorization.

1085912531819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 53.

The spelling of 1085912531819 in words is "one trillion, eighty-five billion, nine hundred twelve million, five hundred thirty-one thousand, eight hundred nineteen".