1616542859 has 4 divisors (see below), whose sum is σ = 1618597704. Its totient is φ = 1614488016.

The previous prime is 1616542849. The next prime is 1616542891. The reversal of 1616542859 is 9582456161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1616542859 - 2⁴ = 1616542843 is a prime.

It is a super-2 number, since 2×1616542859² = 5226421629967787762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616542849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026242 + ... + 1027815.

It is an arithmetic number, because the mean of its divisors is an integer number (404649426).

Almost surely, 2^1616542859 is an apocalyptic number.

1616542859 is a deficient number, since it is larger than the sum of its proper divisors (2054845).

1616542859 is an equidigital number, since it uses as much as digits as its factorization.

1616542859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2054844.

The product of its digits is 518400, while the sum is 47.

The square root of 1616542859 is about 40206.2539787034. The cubic root of 1616542859 is about 1173.6242498571.

The spelling of 1616542859 in words is "one billion, six hundred sixteen million, five hundred forty-two thousand, eight hundred fifty-nine".