1026909648 has 120 divisors (see below), whose sum is σ = 2922646272. Its totient is φ = 336559104.

The previous prime is 1026909647. The next prime is 1026909649. The reversal of 1026909648 is 8469096201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1026909647) and next prime (1026909649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026909641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3628515 + ... + 3628797.

Almost surely, 2^1026909648 is an apocalyptic number.

1026909648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1026909648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1461323136).

1026909648 is an abundant number, since it is smaller than the sum of its proper divisors (1895736624).

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

1026909648 is a wasteful number, since it uses less digits than its factorization.

1026909648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1026909648 is about 32045.4310003782. The cubic root of 1026909648 is about 1008.8906055532.

The spelling of 1026909648 in words is "one billion, twenty-six million, nine hundred nine thousand, six hundred forty-eight".