1089031639 has 2 divisors, whose sum is σ = 1089031640. Its totient is φ = 1089031638.

The previous prime is 1089031637. The next prime is 1089031649. The reversal of 1089031639 is 9361309801.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1089031639 - 2¹ = 1089031637 is a prime.

Together with 1089031637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089031633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544515819 + 544515820.

It is an arithmetic number, because the mean of its divisors is an integer number (544515820).

Almost surely, 2^1089031639 is an apocalyptic number.

1089031639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089031639 is an equidigital number, since it uses as much as digits as its factorization.

1089031639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 1089031639 is about 33000.4793753061. The cubic root of 1089031639 is about 1028.8376113127.

The spelling of 1089031639 in words is "one billion, eighty-nine million, thirty-one thousand, six hundred thirty-nine".