1616540311 has 6 divisors (see below), whose sum is σ = 1706099712. Its totient is φ = 1531458900.

The previous prime is 1616540309. The next prime is 1616540327. The reversal of 1616540311 is 1130456161.

It is not a de Polignac number, because 1616540311 - 2¹ = 1616540309 is a prime.

It is a super-2 number, since 2×1616540311² = 5226405154175953442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1616540311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616540381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2238615 + ... + 2239336.

It is an arithmetic number, because the mean of its divisors is an integer number (284349952).

Almost surely, 2^1616540311 is an apocalyptic number.

1616540311 is a deficient number, since it is larger than the sum of its proper divisors (89559401).

1616540311 is an equidigital number, since it uses as much as digits as its factorization.

1616540311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477989 (or 4477970 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1616540311 is about 40206.2222920781. Note that the first 4 decimals coincide. The cubic root of 1616540311 is about 1173.6236332334.

Adding to 1616540311 its reverse (1130456161), we get a palindrome (2746996472).

The spelling of 1616540311 in words is "one billion, six hundred sixteen million, five hundred forty thousand, three hundred eleven".