1023490985 has 16 divisors (see below), whose sum is σ = 1340952192. Its totient is φ = 743740800.

The previous prime is 1023490981. The next prime is 1023491041. The reversal of 1023490985 is 5890943201.

1023490985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1023490985 - 2² = 1023490981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023490981) 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, 65612 + ... + 79698.

It is an arithmetic number, because the mean of its divisors is an integer number (83809512).

Almost surely, 2^1023490985 is an apocalyptic number.

It is an amenable number.

1023490985 is a deficient number, since it is larger than the sum of its proper divisors (317461207).

1023490985 is a wasteful number, since it uses less digits than its factorization.

1023490985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15424.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 1023490985 is about 31992.0456520054. The cubic root of 1023490985 is about 1007.7698021540.

The spelling of 1023490985 in words is "one billion, twenty-three million, four hundred ninety thousand, nine hundred eighty-five".