928191640245 has 16 divisors (see below), whose sum is σ = 1485156703680. Its totient is φ = 495018848384.

The previous prime is 928191640231. The next prime is 928191640249. The reversal of 928191640245 is 542046191829.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 928191640245 - 2³³ = 919601705653 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (928191640249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 576939 + ... + 1479608.

It is an arithmetic number, because the mean of its divisors is an integer number (92822293980).

Almost surely, 2^928191640245 is an apocalyptic number.

It is an amenable number.

928191640245 is a deficient number, since it is larger than the sum of its proper divisors (556965063435).

928191640245 is a wasteful number, since it uses less digits than its factorization.

928191640245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086644.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 928191640245 in words is "nine hundred twenty-eight billion, one hundred ninety-one million, six hundred forty thousand, two hundred forty-five".