1026491856 has 40 divisors (see below), whose sum is σ = 2855754720. Its totient is φ = 315843456.

The previous prime is 1026491833. The next prime is 1026491857. The reversal of 1026491856 is 6581946201.

1026491856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026491857) 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, 821886 + ... + 823133.

It is an arithmetic number, because the mean of its divisors is an integer number (71393868).

Almost surely, 2^1026491856 is an apocalyptic number.

1026491856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1026491856 is an abundant number, since it is smaller than the sum of its proper divisors (1829262864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1026491856 is a wasteful number, since it uses less digits than its factorization.

1026491856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645043 (or 1645037 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 1026491856 is about 32038.9115920001. The cubic root of 1026491856 is about 1008.7537666405.

The spelling of 1026491856 in words is "one billion, twenty-six million, four hundred ninety-one thousand, eight hundred fifty-six".