2177457923 has 2 divisors, whose sum is σ = 2177457924. Its totient is φ = 2177457922.

The previous prime is 2177457917. The next prime is 2177457959. The reversal of 2177457923 is 3297547712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2177457923 - 2¹⁰ = 2177456899 is a prime.

It is not a weakly prime, because it can be changed into another prime (2177457913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1088728961 + 1088728962.

It is an arithmetic number, because the mean of its divisors is an integer number (1088728962).

Almost surely, 2^2177457923 is an apocalyptic number.

2177457923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2177457923 is an equidigital number, since it uses as much as digits as its factorization.

2177457923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 740880, while the sum is 47.

The square root of 2177457923 is about 46663.2395253480. The cubic root of 2177457923 is about 1296.1340618174.

It can be divided in two parts, 21774 and 57923, that added together give a palindrome (79697).

The spelling of 2177457923 in words is "two billion, one hundred seventy-seven million, four hundred fifty-seven thousand, nine hundred twenty-three".