16746493397 has 4 divisors (see below), whose sum is σ = 16752700800. Its totient is φ = 16740285996.

The previous prime is 16746493339. The next prime is 16746493411. The reversal of 16746493397 is 79339464761.

It is a happy number.

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: 79339464761 = 48889 ⋅1622849.

It is a cyclic number.

It is not a de Polignac number, because 16746493397 - 2⁶ = 16746493333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16746493307) 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, 3099653 + ... + 3105050.

It is an arithmetic number, because the mean of its divisors is an integer number (4188175200).

Almost surely, 2^16746493397 is an apocalyptic number.

It is an amenable number.

16746493397 is a deficient number, since it is larger than the sum of its proper divisors (6207403).

16746493397 is an equidigital number, since it uses as much as digits as its factorization.

16746493397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6207402.

The product of its digits is 20575296, while the sum is 59.

The spelling of 16746493397 in words is "sixteen billion, seven hundred forty-six million, four hundred ninety-three thousand, three hundred ninety-seven".