16161623 has 2 divisors, whose sum is σ = 16161624. Its totient is φ = 16161622.

The previous prime is 16161589. The next prime is 16161631. The reversal of 16161623 is 32616161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16161623 - 2⁶ = 16161559 is a prime.

It is a super-2 number, since 2×16161623² = 522396115988258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16161592 and 16161601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16161653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8080811 + 8080812.

It is an arithmetic number, because the mean of its divisors is an integer number (8080812).

Almost surely, 2^16161623 is an apocalyptic number.

16161623 is a deficient number, since it is larger than the sum of its proper divisors (1).

16161623 is an equidigital number, since it uses as much as digits as its factorization.

16161623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 16161623 is about 4020.1521115500. The cubic root of 16161623 is about 252.8298365732.

Adding to 16161623 its reverse (32616161), we get a palindrome (48777784).

The spelling of 16161623 in words is "sixteen million, one hundred sixty-one thousand, six hundred twenty-three".