1085208437 has 4 divisors (see below), whose sum is σ = 1100074380. Its totient is φ = 1070342496.

The previous prime is 1085208407. The next prime is 1085208479. The reversal of 1085208437 is 7348025801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7348025801 = 113 ⋅65026777.

It can be written as a sum of positive squares in 2 ways, for example, as 360468196 + 724740241 = 18986^2 + 26921^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085208437 - 2¹⁶ = 1085142901 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 1085208437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1085208407) 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, 7432862 + ... + 7433007.

It is an arithmetic number, because the mean of its divisors is an integer number (275018595).

Almost surely, 2^1085208437 is an apocalyptic number.

It is an amenable number.

1085208437 is a deficient number, since it is larger than the sum of its proper divisors (14865943).

1085208437 is an equidigital number, since it uses as much as digits as its factorization.

1085208437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14865942.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1085208437 is about 32942.5019845184. The cubic root of 1085208437 is about 1027.6322389262.

The spelling of 1085208437 in words is "one billion, eighty-five million, two hundred eight thousand, four hundred thirty-seven".