16396918 has 4 divisors (see below), whose sum is σ = 24595380. Its totient is φ = 8198458.

The previous prime is 16396903. The next prime is 16396927. The reversal of 16396918 is 81969361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81969361 = 373 ⋅219757.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4099228 + ... + 4099231.

It is an arithmetic number, because the mean of its divisors is an integer number (6148845).

Almost surely, 2^16396918 is an apocalyptic number.

16396918 is a deficient number, since it is larger than the sum of its proper divisors (8198462).

16396918 is an equidigital number, since it uses as much as digits as its factorization.

16396918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8198461.

The product of its digits is 69984, while the sum is 43.

The square root of 16396918 is about 4049.3108055569. The cubic root of 16396918 is about 254.0509022335.

The spelling of 16396918 in words is "sixteen million, three hundred ninety-six thousand, nine hundred eighteen".