16642373 has 4 divisors (see below), whose sum is σ = 18155328. Its totient is φ = 15129420.

The previous prime is 16642369. The next prime is 16642391. The reversal of 16642373 is 37324661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37324661 = 11 ⋅3393151.

It is a cyclic number.

It is not a de Polignac number, because 16642373 - 2² = 16642369 is a prime.

It is a super-2 number, since 2×16642373² = 553937158142258, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16642313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 756461 + ... + 756482.

It is an arithmetic number, because the mean of its divisors is an integer number (4538832).

Almost surely, 2^16642373 is an apocalyptic number.

It is an amenable number.

16642373 is a deficient number, since it is larger than the sum of its proper divisors (1512955).

16642373 is a wasteful number, since it uses less digits than its factorization.

16642373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512954.

The product of its digits is 18144, while the sum is 32.

The square root of 16642373 is about 4079.5064652480. The cubic root of 16642373 is about 255.3123073412.

The spelling of 16642373 in words is "sixteen million, six hundred forty-two thousand, three hundred seventy-three".