1017989541 has 12 divisors (see below), whose sum is σ = 1483443468. Its totient is φ = 672653184.

The previous prime is 1017989537. The next prime is 1017989569. The reversal of 1017989541 is 1459897101.

It is a happy number.

1017989541 is a `hidden beast` number, since 1 + 0 + 17 + 98 + 9 + 541 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20061441 + 997928100 = 4479^2 + 31590^2 .

It is not a de Polignac number, because 1017989541 - 2² = 1017989537 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 (1017989941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 499470 + ... + 501503.

It is an arithmetic number, because the mean of its divisors is an integer number (123620289).

Almost surely, 2^1017989541 is an apocalyptic number.

It is an amenable number.

1017989541 is a deficient number, since it is larger than the sum of its proper divisors (465453927).

1017989541 is a wasteful number, since it uses less digits than its factorization.

1017989541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001092 (or 1001089 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The square root of 1017989541 is about 31905.9483639023. The cubic root of 1017989541 is about 1005.9609106094.

The spelling of 1017989541 in words is "one billion, seventeen million, nine hundred eighty-nine thousand, five hundred forty-one".