16542693 has 12 divisors (see below), whose sum is σ = 23987340. Its totient is φ = 10985856.

The previous prime is 16542667. The next prime is 16542709. The reversal of 16542693 is 39624561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1542564 + 15000129 = 1242^2 + 3873^2 .

It is not a de Polignac number, because 16542693 - 2⁵ = 16542661 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16542193) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 996 + ... + 5837.

It is an arithmetic number, because the mean of its divisors is an integer number (1998945).

Almost surely, 2^16542693 is an apocalyptic number.

It is an amenable number.

16542693 is a deficient number, since it is larger than the sum of its proper divisors (7444647).

16542693 is a wasteful number, since it uses less digits than its factorization.

16542693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7108 (or 7105 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 16542693 is about 4067.2709523709. The cubic root of 16542693 is about 254.8015526391.

The spelling of 16542693 in words is "sixteen million, five hundred forty-two thousand, six hundred ninety-three".