1061808456 has 64 divisors (see below), whose sum is σ = 2704380480. Its totient is φ = 347316480.

The previous prime is 1061808439. The next prime is 1061808467. The reversal of 1061808456 is 6548081601.

It is a super-2 number, since 2×1061808456² = 2254874394466207872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1210290 + ... + 1211166.

It is an arithmetic number, because the mean of its divisors is an integer number (42255945).

Almost surely, 2^1061808456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1061808456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352190240).

1061808456 is an abundant number, since it is smaller than the sum of its proper divisors (1642572024).

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

1061808456 is a wasteful number, since it uses less digits than its factorization.

1061808456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 1770 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 1061808456 is about 32585.4024986650. The cubic root of 1061808456 is about 1020.1923435810.

The spelling of 1061808456 in words is "one billion, sixty-one million, eight hundred eight thousand, four hundred fifty-six".