1616415971 has 2 divisors, whose sum is σ = 1616415972. Its totient is φ = 1616415970.

The previous prime is 1616415959. The next prime is 1616415973. The reversal of 1616415971 is 1795146161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1616415971 - 2¹⁸ = 1616153827 is a prime.

It is a super-2 number, since 2×1616415971² = 5225601182607745682, which contains 22 as substring.

Together with 1616415973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1616415973) by changing a digit.

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 as a sum of consecutive naturals, namely, 808207985 + 808207986.

It is an arithmetic number, because the mean of its divisors is an integer number (808207986).

Almost surely, 2^1616415971 is an apocalyptic number.

1616415971 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616415971 is an equidigital number, since it uses as much as digits as its factorization.

1616415971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 41.

The square root of 1616415971 is about 40204.6759842683. The cubic root of 1616415971 is about 1173.5935417879.

The spelling of 1616415971 in words is "one billion, six hundred sixteen million, four hundred fifteen thousand, nine hundred seventy-one".