16213147 has 2 divisors, whose sum is σ = 16213148. Its totient is φ = 16213146.

The previous prime is 16213139. The next prime is 16213151. The reversal of 16213147 is 74131261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16213147 - 2³ = 16213139 is a prime.

It is a super-2 number, since 2×16213147² = 525732271287218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (16213157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8106573 + 8106574.

It is an arithmetic number, because the mean of its divisors is an integer number (8106574).

Almost surely, 2^16213147 is an apocalyptic number.

16213147 is a deficient number, since it is larger than the sum of its proper divisors (1).

16213147 is an equidigital number, since it uses as much as digits as its factorization.

16213147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 16213147 is about 4026.5552274866. Note that the first 3 decimals coincide. The cubic root of 16213147 is about 253.0982292879.

The spelling of 16213147 in words is "sixteen million, two hundred thirteen thousand, one hundred forty-seven".