193238945 has 16 divisors (see below), whose sum is σ = 239041152. Its totient is φ = 149869440.

The previous prime is 193238933. The next prime is 193238951. The reversal of 193238945 is 549832391.

It is not a de Polignac number, because 193238945 - 2¹² = 193234849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 193238896 and 193238905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30524 + ... + 36306.

It is an arithmetic number, because the mean of its divisors is an integer number (14940072).

Almost surely, 2^193238945 is an apocalyptic number.

It is an amenable number.

193238945 is a deficient number, since it is larger than the sum of its proper divisors (45802207).

193238945 is a wasteful number, since it uses less digits than its factorization.

193238945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5992.

The product of its digits is 233280, while the sum is 44.

The square root of 193238945 is about 13901.0411480579. The cubic root of 193238945 is about 578.1380490651.

The spelling of 193238945 in words is "one hundred ninety-three million, two hundred thirty-eight thousand, nine hundred forty-five".