1065791808 has 168 divisors, whose sum is σ = 3213189408. Its totient is φ = 337333248.

The previous prime is 1065791803. The next prime is 1065791849. The reversal of 1065791808 is 8081975601.

It is a super-2 number, since 2×1065791808² = 2271824355999817728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065791801) 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, 915835 + ... + 916997.

Almost surely, 2^1065791808 is an apocalyptic number.

1065791808 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 1065791808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606594704).

1065791808 is an abundant number, since it is smaller than the sum of its proper divisors (2147397600).

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

1065791808 is a wasteful number, since it uses less digits than its factorization.

1065791808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1248 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 1065791808 is about 32646.4670064006. The cubic root of 1065791808 is about 1021.4664949338.

The spelling of 1065791808 in words is "one billion, sixty-five million, seven hundred ninety-one thousand, eight hundred eight".