16642151 has 2 divisors, whose sum is σ = 16642152. Its totient is φ = 16642150.

The previous prime is 16642147. The next prime is 16642177. The reversal of 16642151 is 15124661.

It is an a-pointer prime, because the next prime (16642177) can be obtained adding 16642151 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (15124661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16642151 - 2² = 16642147 is a prime.

It is a super-2 number, since 2×16642151² = 553922379813602, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16642151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16642111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8321075 + 8321076.

It is an arithmetic number, because the mean of its divisors is an integer number (8321076).

Almost surely, 2^16642151 is an apocalyptic number.

16642151 is a deficient number, since it is larger than the sum of its proper divisors (1).

16642151 is an equidigital number, since it uses as much as digits as its factorization.

16642151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 16642151 is about 4079.4792559835. The cubic root of 16642151 is about 255.3111720948.

The spelling of 16642151 in words is "sixteen million, six hundred forty-two thousand, one hundred fifty-one".