1019943045 has 48 divisors (see below), whose sum is σ = 1955850624. Its totient is φ = 487536000.

The previous prime is 1019943017. The next prime is 1019943049. The reversal of 1019943045 is 5403499101.

It is a happy number.

It is not a de Polignac number, because 1019943045 - 2⁹ = 1019942533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1019943049) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20635 + ... + 49655.

It is an arithmetic number, because the mean of its divisors is an integer number (40746888).

Almost surely, 2^1019943045 is an apocalyptic number.

1019943045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1019943045 is a deficient number, since it is larger than the sum of its proper divisors (935907579).

1019943045 is a wasteful number, since it uses less digits than its factorization.

1019943045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29114 (or 29111 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1019943045 is about 31936.5471677826. The cubic root of 1019943045 is about 1006.6039731995.

The spelling of 1019943045 in words is "one billion, nineteen million, nine hundred forty-three thousand, forty-five".