1616543043 has 4 divisors (see below), whose sum is σ = 2155390728. Its totient is φ = 1077695360.

The previous prime is 1616543041. The next prime is 1616543057. The reversal of 1616543043 is 3403456161.

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

It is a cyclic number.

It is not a de Polignac number, because 1616543043 - 2¹ = 1616543041 is a prime.

It is a super-2 number, since 2×1616543043² = 5226422819743399698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616542995 and 1616543013.

It is not an unprimeable number, because it can be changed into a prime (1616543041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269423838 + ... + 269423843.

It is an arithmetic number, because the mean of its divisors is an integer number (538847682).

Almost surely, 2^1616543043 is an apocalyptic number.

1616543043 is a deficient number, since it is larger than the sum of its proper divisors (538847685).

1616543043 is an equidigital number, since it uses as much as digits as its factorization.

1616543043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538847684.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 1616543043 is about 40206.2562669045. The cubic root of 1616543043 is about 1173.6242943857.

The spelling of 1616543043 in words is "one billion, six hundred sixteen million, five hundred forty-three thousand, forty-three".