1616549858 has 64 divisors (see below), whose sum is σ = 3068713728. Its totient is φ = 620421120.

The previous prime is 1616549827. The next prime is 1616549861. The reversal of 1616549858 is 8589456161.

It is a super-2 number, since 2×1616549858² = 5226466886799640328, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4071716 + ... + 4072112.

It is an arithmetic number, because the mean of its divisors is an integer number (47948652).

Almost surely, 2^1616549858 is an apocalyptic number.

1616549858 is a deficient number, since it is larger than the sum of its proper divisors (1452163870).

1616549858 is a wasteful number, since it uses less digits than its factorization.

1616549858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 747.

The product of its digits is 2073600, while the sum is 53.

The square root of 1616549858 is about 40206.3410173072. The cubic root of 1616549858 is about 1173.6259436331.

The spelling of 1616549858 in words is "one billion, six hundred sixteen million, five hundred forty-nine thousand, eight hundred fifty-eight".