1616137687 has 2 divisors, whose sum is σ = 1616137688. Its totient is φ = 1616137686.

The previous prime is 1616137613. The next prime is 1616137693. The reversal of 1616137687 is 7867316161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1616137687 - 2⁷ = 1616137559 is a prime.

It is a super-2 number, since 2×1616137687² = 5223802046683419938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1616137087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808068843 + 808068844.

It is an arithmetic number, because the mean of its divisors is an integer number (808068844).

Almost surely, 2^1616137687 is an apocalyptic number.

1616137687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616137687 is an equidigital number, since it uses as much as digits as its factorization.

1616137687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 46.

The square root of 1616137687 is about 40201.2149940770. The cubic root of 1616137687 is about 1173.5261888591.

The spelling of 1616137687 in words is "one billion, six hundred sixteen million, one hundred thirty-seven thousand, six hundred eighty-seven".