1045663803 has 32 divisors (see below), whose sum is σ = 1641177600. Its totient is φ = 656162208.

The previous prime is 1045663781. The next prime is 1045663811. The reversal of 1045663803 is 3083665401.

1045663803 is a `hidden beast` number, since 10 + 4 + 5 + 6 + 638 + 0 + 3 = 666.

It is not a de Polignac number, because 1045663803 - 2⁹ = 1045663291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1045663823) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74050 + ... + 87032.

It is an arithmetic number, because the mean of its divisors is an integer number (51286800).

Almost surely, 2^1045663803 is an apocalyptic number.

1045663803 is a deficient number, since it is larger than the sum of its proper divisors (595513797).

1045663803 is a wasteful number, since it uses less digits than its factorization.

1045663803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13168 (or 13162 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 1045663803 is about 32336.7252980261. The cubic root of 1045663803 is about 1014.9952851504.

The spelling of 1045663803 in words is "one billion, forty-five million, six hundred sixty-three thousand, eight hundred three".