1045405866 has 16 divisors (see below), whose sum is σ = 2135297664. Its totient is φ = 341054304.

The previous prime is 1045405843. The next prime is 1045405873. The reversal of 1045405866 is 6685045401.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1853275 + ... + 1853838.

It is an arithmetic number, because the mean of its divisors is an integer number (133456104).

Almost surely, 2^1045405866 is an apocalyptic number.

1045405866 is an abundant number, since it is smaller than the sum of its proper divisors (1089891798).

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

1045405866 is a wasteful number, since it uses less digits than its factorization.

1045405866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707165.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 1045405866 is about 32332.7367539465. The cubic root of 1045405866 is about 1014.9118209854.

The spelling of 1045405866 in words is "one billion, forty-five million, four hundred five thousand, eight hundred sixty-six".