1085931563 has 2 divisors, whose sum is σ = 1085931564. Its totient is φ = 1085931562.

The previous prime is 1085931547. The next prime is 1085931601. The reversal of 1085931563 is 3651395801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1085931563 - 2⁴ = 1085931547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1085931563.

It is not a weakly prime, because it can be changed into another prime (1085937563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542965781 + 542965782.

It is an arithmetic number, because the mean of its divisors is an integer number (542965782).

Almost surely, 2^1085931563 is an apocalyptic number.

1085931563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085931563 is an equidigital number, since it uses as much as digits as its factorization.

1085931563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 1085931563 is about 32953.4757347385. The cubic root of 1085931563 is about 1027.8604416598.

The spelling of 1085931563 in words is "one billion, eighty-five million, nine hundred thirty-one thousand, five hundred sixty-three".