1085912531849 has 4 divisors (see below), whose sum is σ = 1086036234960. Its totient is φ = 1085788828740.

The previous prime is 1085912531819. The next prime is 1085912531861. The reversal of 1085912531849 is 9481352195801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1085912531849 - 2¹² = 1085912527753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1085912531794 and 1085912531803.

It is not an unprimeable number, because it can be changed into a prime (1085912531819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61838387 + ... + 61855944.

It is an arithmetic number, because the mean of its divisors is an integer number (271509058740).

Almost surely, 2^{1085912531849} is an apocalyptic number.

It is an amenable number.

1085912531849 is a deficient number, since it is larger than the sum of its proper divisors (123703111).

1085912531849 is an equidigital number, since it uses as much as digits as its factorization.

1085912531849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123703110.

The product of its (nonzero) digits is 3110400, while the sum is 56.

The spelling of 1085912531849 in words is "one trillion, eighty-five billion, nine hundred twelve million, five hundred thirty-one thousand, eight hundred forty-nine".