1040168640 has 112 divisors (see below), whose sum is σ = 3774350592. Its totient is φ = 237751296.

The previous prime is 1040168627. The next prime is 1040168651. The reversal of 1040168640 is 468610401.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1040168598 and 1040168607.

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, 70674 + ... + 84113.

Almost surely, 2^1040168640 is an apocalyptic number.

1040168640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1040168640 is an abundant number, since it is smaller than the sum of its proper divisors (2734181952).

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

1040168640 is a wasteful number, since it uses less digits than its factorization.

1040168640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154814 (or 154804 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1040168640 is about 32251.6455394140. The cubic root of 1040168640 is about 1013.2141634252.

The spelling of 1040168640 in words is "one billion, forty million, one hundred sixty-eight thousand, six hundred forty".