233911988493 has 8 divisors (see below), whose sum is σ = 318518452608. Its totient is φ = 152623425024.

The previous prime is 233911988447. The next prime is 233911988521. The reversal of 233911988493 is 394889119332.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 233911988493 - 2⁸ = 233911988237 is a prime.

It is a super-2 number, since 2×233911988493² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233911988413) 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, 829474996 + ... + 829475277.

It is an arithmetic number, because the mean of its divisors is an integer number (39814806576).

Almost surely, 2^233911988493 is an apocalyptic number.

It is an amenable number.

233911988493 is a deficient number, since it is larger than the sum of its proper divisors (84606464115).

233911988493 is a wasteful number, since it uses less digits than its factorization.

233911988493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1658950323.

The product of its digits is 10077696, while the sum is 60.

The spelling of 233911988493 in words is "two hundred thirty-three billion, nine hundred eleven million, nine hundred eighty-eight thousand, four hundred ninety-three".