193904001 has 6 divisors (see below), whose sum is σ = 280083570. Its totient is φ = 129269328.

The previous prime is 193903991. The next prime is 193904003. The reversal of 193904001 is 100409391.

It can be written as a sum of positive squares in only one way, i.e., 160275600 + 33628401 = 12660^2 + 5799^2 .

It is not a de Polignac number, because 193904001 - 2¹³ = 193895809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (193904003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10772436 + ... + 10772453.

It is an arithmetic number, because the mean of its divisors is an integer number (46680595).

Almost surely, 2^193904001 is an apocalyptic number.

It is an amenable number.

193904001 is a deficient number, since it is larger than the sum of its proper divisors (86179569).

193904001 is a wasteful number, since it uses less digits than its factorization.

193904001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21544895 (or 21544892 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 193904001 is about 13924.9416874901. The cubic root of 193904001 is about 578.8005344402.

The spelling of 193904001 in words is "one hundred ninety-three million, nine hundred four thousand, one".