1045999845 has 64 divisors (see below), whose sum is σ = 2056608000. Its totient is φ = 500152320.

The previous prime is 1045999807. The next prime is 1045999859. The reversal of 1045999845 is 5489995401.

1045999845 is a `hidden beast` number, since 1 + 0 + 4 + 599 + 9 + 8 + 45 = 666.

It is not a de Polignac number, because 1045999845 - 2⁹ = 1045999333 is a prime.

It is a super-3 number, since 3×1045999845³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1045999791 and 1045999800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 103581 + ... + 113229.

It is an arithmetic number, because the mean of its divisors is an integer number (32134500).

Almost surely, 2^1045999845 is an apocalyptic number.

1045999845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1045999845 is a deficient number, since it is larger than the sum of its proper divisors (1010608155).

1045999845 is a wasteful number, since it uses less digits than its factorization.

1045999845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747 (or 9741 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 54.

The square root of 1045999845 is about 32341.9208613218. The cubic root of 1045999845 is about 1015.1040022205.

The spelling of 1045999845 in words is "one billion, forty-five million, nine hundred ninety-nine thousand, eight hundred forty-five".