1045405404 has 18 divisors (see below), whose sum is σ = 2642552640. Its totient is φ = 348468456.

The previous prime is 1045405397. The next prime is 1045405423. The reversal of 1045405404 is 4045045401.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14519484 + ... + 14519555.

It is an arithmetic number, because the mean of its divisors is an integer number (146808480).

Almost surely, 2^1045405404 is an apocalyptic number.

It is an amenable number.

1045405404 is an abundant number, since it is smaller than the sum of its proper divisors (1597147236).

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

1045405404 is a wasteful number, since it uses less digits than its factorization.

1045405404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29039049 (or 29039044 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

The square root of 1045405404 is about 32332.7296094839. The cubic root of 1045405404 is about 1014.9116714775.

The spelling of 1045405404 in words is "one billion, forty-five million, four hundred five thousand, four hundred four".