193380639 has 4 divisors (see below), whose sum is σ = 257840856. Its totient is φ = 128920424.

The previous prime is 193380631. The next prime is 193380643. The reversal of 193380639 is 936083391.

193380639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 936083391 = 3 ⋅312027797.

It is a cyclic number.

It is not a de Polignac number, because 193380639 - 2³ = 193380631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 193380639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193380631) 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, 32230104 + ... + 32230109.

It is an arithmetic number, because the mean of its divisors is an integer number (64460214).

Almost surely, 2^193380639 is an apocalyptic number.

193380639 is a deficient number, since it is larger than the sum of its proper divisors (64460217).

193380639 is an equidigital number, since it uses as much as digits as its factorization.

193380639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64460216.

The product of its (nonzero) digits is 104976, while the sum is 42.

The square root of 193380639 is about 13906.1367388646. The cubic root of 193380639 is about 578.2793226549.

The spelling of 193380639 in words is "one hundred ninety-three million, three hundred eighty thousand, six hundred thirty-nine".