1030891045 has 8 divisors (see below), whose sum is σ = 1244949624. Its totient is φ = 819459264.

The previous prime is 1030891039. The next prime is 1030891049. The reversal of 1030891045 is 5401980301.

1030891045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 70324996 + 960566049 = 8386^2 + 30993^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1030891045 - 2⁵ = 1030891013 is a prime.

It is a super-2 number, since 2×1030891045² = 2125472693322384050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1030890998 and 1030891016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1030891049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 655834 + ... + 657403.

It is an arithmetic number, because the mean of its divisors is an integer number (155618703).

Almost surely, 2^1030891045 is an apocalyptic number.

It is an amenable number.

1030891045 is a deficient number, since it is larger than the sum of its proper divisors (214058579).

1030891045 is a wasteful number, since it uses less digits than its factorization.

1030891045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313399.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1030891045 is about 32107.4920384635. The cubic root of 1030891045 is about 1010.1927694663.

The spelling of 1030891045 in words is "one billion, thirty million, eight hundred ninety-one thousand, forty-five".