1616067605 has 4 divisors (see below), whose sum is σ = 1939281132. Its totient is φ = 1292854080.

The previous prime is 1616067547. The next prime is 1616067613. The reversal of 1616067605 is 5067606161.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1268356996 + 347710609 = 35614^2 + 18647^2 .

It is not a de Polignac number, because 1616067605 - 2²² = 1611873301 is a prime.

It is a super-2 number, since 2×1616067605² = 5223349007860872050, which contains 22 as substring.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 161606756 + ... + 161606765.

It is an arithmetic number, because the mean of its divisors is an integer number (484820283).

Almost surely, 2^1616067605 is an apocalyptic number.

It is an amenable number.

1616067605 is a deficient number, since it is larger than the sum of its proper divisors (323213527).

1616067605 is an equidigital number, since it uses as much as digits as its factorization.

1616067605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323213526.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 1616067605 is about 40200.3433443049. The cubic root of 1616067605 is about 1173.5092257311.

The spelling of 1616067605 in words is "one billion, six hundred sixteen million, sixty-seven thousand, six hundred five".