1616007644 has 24 divisors (see below), whose sum is σ = 2845718400. Its totient is φ = 802957680.

The previous prime is 1616007619. The next prime is 1616007667. The reversal of 1616007644 is 4467006161.

It is a super-2 number, since 2×1616007644² = 5222961410932861472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 859097 + ... + 860975.

It is an arithmetic number, because the mean of its divisors is an integer number (118571600).

Almost surely, 2^1616007644 is an apocalyptic number.

It is an amenable number.

1616007644 is a deficient number, since it is larger than the sum of its proper divisors (1229710756).

1616007644 is a wasteful number, since it uses less digits than its factorization.

1616007644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3113 (or 3111 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1616007644 is about 40199.5975601747. The cubic root of 1616007644 is about 1173.4947119701.

The spelling of 1616007644 in words is "one billion, six hundred sixteen million, seven thousand, six hundred forty-four".