163742593 has 4 divisors (see below), whose sum is σ = 187134400. Its totient is φ = 140350788.

The previous prime is 163742587. The next prime is 163742603. The reversal of 163742593 is 395247361.

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.

It is a cyclic number.

It is not a de Polignac number, because 163742593 - 2²¹ = 161645441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163742393) 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, 11695893 + ... + 11695906.

It is an arithmetic number, because the mean of its divisors is an integer number (46783600).

Almost surely, 2^163742593 is an apocalyptic number.

It is an amenable number.

163742593 is a deficient number, since it is larger than the sum of its proper divisors (23391807).

163742593 is an equidigital number, since it uses as much as digits as its factorization.

163742593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23391806.

The product of its digits is 136080, while the sum is 40.

The square root of 163742593 is about 12796.1944733581. The cubic root of 163742593 is about 547.0838415780.

The spelling of 163742593 in words is "one hundred sixty-three million, seven hundred forty-two thousand, five hundred ninety-three".