1616851 has 2 divisors, whose sum is σ = 1616852. Its totient is φ = 1616850.

The previous prime is 1616833. The next prime is 1616861. The reversal of 1616851 is 1586161.

It is a strong prime.

It is an emirp because it is prime and its reverse (1586161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1616851 - 2⁷ = 1616723 is a prime.

It is a super-2 number, since 2×1616851² = 5228414312402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1616801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808425 + 808426.

It is an arithmetic number, because the mean of its divisors is an integer number (808426).

2^1616851 is an apocalyptic number.

1616851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1616851 is an equidigital number, since it uses as much as digits as its factorization.

1616851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 28.

The square root of 1616851 is about 1271.5545603709. The cubic root of 1616851 is about 117.3698816140.

It can be divided in two parts, 161 and 6851, that multiplied together give a palindrome (1103011).

The spelling of 1616851 in words is "one million, six hundred sixteen thousand, eight hundred fifty-one".