16423951 has 2 divisors, whose sum is σ = 16423952. Its totient is φ = 16423950.

The previous prime is 16423919. The next prime is 16423973. The reversal of 16423951 is 15932461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16423951 - 2⁵ = 16423919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16423991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8211975 + 8211976.

It is an arithmetic number, because the mean of its divisors is an integer number (8211976).

Almost surely, 2^16423951 is an apocalyptic number.

16423951 is a deficient number, since it is larger than the sum of its proper divisors (1).

16423951 is an equidigital number, since it uses as much as digits as its factorization.

16423951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 31.

The square root of 16423951 is about 4052.6474063259. The cubic root of 16423951 is about 254.1904403932.

The spelling of 16423951 in words is "sixteen million, four hundred twenty-three thousand, nine hundred fifty-one".