193263664 has 40 divisors (see below), whose sum is σ = 426258432. Its totient is φ = 84025920.

The previous prime is 193263661. The next prime is 193263689. The reversal of 193263664 is 466362391.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (193263661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19824 + ... + 27919.

Almost surely, 2^193263664 is an apocalyptic number.

It is an amenable number.

193263664 is an abundant number, since it is smaller than the sum of its proper divisors (232994768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

193263664 is a wasteful number, since it uses less digits than its factorization.

193263664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47785 (or 47779 counting only the distinct ones).

The product of its digits is 139968, while the sum is 40.

The square root of 193263664 is about 13901.9302256917. The cubic root of 193263664 is about 578.1626996949.

The spelling of 193263664 in words is "one hundred ninety-three million, two hundred sixty-three thousand, six hundred sixty-four".