1081890607 has 16 divisors (see below), whose sum is σ = 1295398912. Its totient is φ = 884014560.

The previous prime is 1081890569. The next prime is 1081890631. The reversal of 1081890607 is 7060981801.

It is a cyclic number.

It is not a de Polignac number, because 1081890607 - 2¹⁵ = 1081857839 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 1081890607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081840607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22668 + ... + 51745.

It is an arithmetic number, because the mean of its divisors is an integer number (80962432).

Almost surely, 2^1081890607 is an apocalyptic number.

1081890607 is a deficient number, since it is larger than the sum of its proper divisors (213508305).

1081890607 is an equidigital number, since it uses as much as digits as its factorization.

1081890607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74518.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 1081890607 is about 32892.1055422118. The cubic root of 1081890607 is about 1026.5839027963.

The spelling of 1081890607 in words is "one billion, eighty-one million, eight hundred ninety thousand, six hundred seven".