16191853 has 2 divisors, whose sum is σ = 16191854. Its totient is φ = 16191852.

The previous prime is 16191767. The next prime is 16191863. The reversal of 16191853 is 35819161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13638249 + 2553604 = 3693^2 + 1598^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16191853 is a prime.

It is a super-2 number, since 2×16191853² = 524352207147218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16191863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8095926 + 8095927.

It is an arithmetic number, because the mean of its divisors is an integer number (8095927).

Almost surely, 2^16191853 is an apocalyptic number.

It is an amenable number.

16191853 is a deficient number, since it is larger than the sum of its proper divisors (1).

16191853 is an equidigital number, since it uses as much as digits as its factorization.

16191853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 16191853 is about 4023.9101630131. The cubic root of 16191853 is about 252.9873761453.

The spelling of 16191853 in words is "sixteen million, one hundred ninety-one thousand, eight hundred fifty-three".