923809638811 has 2 divisors, whose sum is σ = 923809638812. Its totient is φ = 923809638810.

The previous prime is 923809638781. The next prime is 923809638821. The reversal of 923809638811 is 118836908329.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 923809638811 - 2¹⁵ = 923809606043 is a prime.

It is a super-2 number, since 2×923809638811² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (923809638821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461904819405 + 461904819406.

It is an arithmetic number, because the mean of its divisors is an integer number (461904819406).

Almost surely, 2^923809638811 is an apocalyptic number.

923809638811 is a deficient number, since it is larger than the sum of its proper divisors (1).

923809638811 is an equidigital number, since it uses as much as digits as its factorization.

923809638811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4478976, while the sum is 58.

The spelling of 923809638811 in words is "nine hundred twenty-three billion, eight hundred nine million, six hundred thirty-eight thousand, eight hundred eleven".