1081607904 has 120 divisors (see below), whose sum is σ = 3425776200. Its totient is φ = 332792064.

The previous prime is 1081607899. The next prime is 1081607911. The reversal of 1081607904 is 4097061801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17647 + ... + 49745.

It is an arithmetic number, because the mean of its divisors is an integer number (28548135).

Almost surely, 2^1081607904 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 1081607904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1712888100).

1081607904 is an abundant number, since it is smaller than the sum of its proper divisors (2344168296).

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

1081607904 is a wasteful number, since it uses less digits than its factorization.

1081607904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32134 (or 32117 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1081607904 is about 32887.8078320827. The cubic root of 1081607904 is about 1026.4944779723.

The spelling of 1081607904 in words is "one billion, eighty-one million, six hundred seven thousand, nine hundred four".