1616000444 has 6 divisors (see below), whose sum is σ = 2828000784. Its totient is φ = 808000220.

The previous prime is 1616000443. The next prime is 1616000513. The reversal of 1616000444 is 4440006161.

It is a super-2 number, since 2×1616000444² = 5222914870016394272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616000443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202000052 + ... + 202000059.

It is an arithmetic number, because the mean of its divisors is an integer number (471333464).

Almost surely, 2^1616000444 is an apocalyptic number.

It is an amenable number.

1616000444 is a deficient number, since it is larger than the sum of its proper divisors (1212000340).

1616000444 is a wasteful number, since it uses less digits than its factorization.

1616000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404000115 (or 404000113 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1616000444 is about 40199.5080069396. The cubic root of 1616000444 is about 1173.4929691619.

The spelling of 1616000444 in words is "one billion, six hundred sixteen million, four hundred forty-four", and thus it is an aban number.