1017989542 has 8 divisors (see below), whose sum is σ = 1527161976. Its totient is φ = 508935552.

The previous prime is 1017989537. The next prime is 1017989569. The reversal of 1017989542 is 2459897101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1017989492 and 1017989501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3528 + ... + 45259.

It is an arithmetic number, because the mean of its divisors is an integer number (190895247).

Almost surely, 2^1017989542 is an apocalyptic number.

1017989542 is a deficient number, since it is larger than the sum of its proper divisors (509172434).

1017989542 is a wasteful number, since it uses less digits than its factorization.

1017989542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59222.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 1017989542 is about 31905.9483795734. The cubic root of 1017989542 is about 1005.9609109388.

The spelling of 1017989542 in words is "one billion, seventeen million, nine hundred eighty-nine thousand, five hundred forty-two".