1085191943 has 4 divisors (see below), whose sum is σ = 1183845768. Its totient is φ = 986538120.

The previous prime is 1085191937. The next prime is 1085191949. The reversal of 1085191943 is 3491915801.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1085191937) and next prime (1085191949).

It is a cyclic number.

It is not a de Polignac number, because 1085191943 - 2⁶ = 1085191879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1085191943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085191949) 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, 49326896 + ... + 49326917.

It is an arithmetic number, because the mean of its divisors is an integer number (295961442).

Almost surely, 2^1085191943 is an apocalyptic number.

1085191943 is a deficient number, since it is larger than the sum of its proper divisors (98653825).

1085191943 is an equidigital number, since it uses as much as digits as its factorization.

1085191943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98653824.

The product of its (nonzero) digits is 38880, while the sum is 41.

The square root of 1085191943 is about 32942.2516382836. The cubic root of 1085191943 is about 1027.6270325986.

The spelling of 1085191943 in words is "one billion, eighty-five million, one hundred ninety-one thousand, nine hundred forty-three".