1616670539 has 16 divisors (see below), whose sum is σ = 1885895136. Its totient is φ = 1369536000.

The previous prime is 1616670533. The next prime is 1616670551. The reversal of 1616670539 is 9350766161.

It is a cyclic number.

It is not a de Polignac number, because 1616670539 - 2²⁰ = 1615621963 is a prime.

It is a super-2 number, since 2×1616670539² = 5227247263341101042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1616670539.

It is not an unprimeable number, because it can be changed into a prime (1616670533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23912 + ... + 61685.

It is an arithmetic number, because the mean of its divisors is an integer number (117868446).

Almost surely, 2^1616670539 is an apocalyptic number.

1616670539 is a deficient number, since it is larger than the sum of its proper divisors (269224597).

1616670539 is a wasteful number, since it uses less digits than its factorization.

1616670539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85726.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 1616670539 is about 40207.8417600348. The cubic root of 1616670539 is about 1173.6551479758.

The spelling of 1616670539 in words is "one billion, six hundred sixteen million, six hundred seventy thousand, five hundred thirty-nine".