1016405784 has 48 divisors (see below), whose sum is σ = 2787626400. Its totient is φ = 334511424.

The previous prime is 1016405777. The next prime is 1016405807. The reversal of 1016405784 is 4875046101.

It is a happy number.

1016405784 is a `hidden beast` number, since 1 + 0 + 1 + 640 + 5 + 7 + 8 + 4 = 666.

1016405784 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 11 ways as a sum of consecutive naturals, for example, 83659 + ... + 95034.

It is an arithmetic number, because the mean of its divisors is an integer number (58075550).

Almost surely, 2^1016405784 is an apocalyptic number.

It is an amenable number.

1016405784 is an abundant number, since it is smaller than the sum of its proper divisors (1771220616).

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

1016405784 is a wasteful number, since it uses less digits than its factorization.

1016405784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178784 (or 178777 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1016405784 is about 31881.1195537421. The cubic root of 1016405784 is about 1005.4389587620.

The spelling of 1016405784 in words is "one billion, sixteen million, four hundred five thousand, seven hundred eighty-four".