1089031013 has 4 divisors (see below), whose sum is σ = 1244606880. Its totient is φ = 933455148.

The previous prime is 1089031007. The next prime is 1089031063. The reversal of 1089031013 is 3101309801.

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 1089031013 - 2⁶ = 1089030949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089031063) 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, 77787923 + ... + 77787936.

It is an arithmetic number, because the mean of its divisors is an integer number (311151720).

Almost surely, 2^1089031013 is an apocalyptic number.

It is an amenable number.

1089031013 is a deficient number, since it is larger than the sum of its proper divisors (155575867).

1089031013 is an equidigital number, since it uses as much as digits as its factorization.

1089031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155575866.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1089031013 is about 33000.4698905940. The cubic root of 1089031013 is about 1028.8374141796.

The spelling of 1089031013 in words is "one billion, eighty-nine million, thirty-one thousand, thirteen".