193742473 has 4 divisors (see below), whose sum is σ = 194588740. Its totient is φ = 192896208.

The previous prime is 193742453. The next prime is 193742491. The reversal of 193742473 is 374247391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374247391 = 7 ⋅53463913.

It can be written as a sum of positive squares in 2 ways, for example, as 143233024 + 50509449 = 11968^2 + 7107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193742473 is a prime.

It is a super-2 number, since 2×193742473² = 75072291688311458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193742443) 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, 422790 + ... + 423247.

It is an arithmetic number, because the mean of its divisors is an integer number (48647185).

Almost surely, 2^193742473 is an apocalyptic number.

It is an amenable number.

193742473 is a deficient number, since it is larger than the sum of its proper divisors (846267).

193742473 is an equidigital number, since it uses as much as digits as its factorization.

193742473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846266.

The product of its digits is 127008, while the sum is 40.

The square root of 193742473 is about 13919.1405266274. The cubic root of 193742473 is about 578.6397702390.

The spelling of 193742473 in words is "one hundred ninety-three million, seven hundred forty-two thousand, four hundred seventy-three".