1659389642 has 8 divisors (see below), whose sum is σ = 2489271456. Its totient is φ = 829632492.

The previous prime is 1659389629. The next prime is 1659389759. The reversal of 1659389642 is 2469839561.

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

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, 17003 + ... + 60065.

It is an arithmetic number, because the mean of its divisors is an integer number (311158932).

Almost surely, 2^1659389642 is an apocalyptic number.

1659389642 is a deficient number, since it is larger than the sum of its proper divisors (829881814).

1659389642 is a wasteful number, since it uses less digits than its factorization.

1659389642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62332.

The product of its digits is 2799360, while the sum is 53.

The square root of 1659389642 is about 40735.6065623184. The cubic root of 1659389642 is about 1183.9030106248.

The spelling of 1659389642 in words is "one billion, six hundred fifty-nine million, three hundred eighty-nine thousand, six hundred forty-two".