2098723457 has 18 divisors (see below), whose sum is σ = 2286134982. Its totient is φ = 1919980800.

The previous prime is 2098723447. The next prime is 2098723469. The reversal of 2098723457 is 7543278902.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1175056 + 2097548401 = 1084^2 + 45799^2 .

It is not a de Polignac number, because 2098723457 - 2⁴ = 2098723441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2098723447) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7744232 + ... + 7744502.

It is an arithmetic number, because the mean of its divisors is an integer number (127007499).

Almost surely, 2^2098723457 is an apocalyptic number.

It is an amenable number.

2098723457 is a deficient number, since it is larger than the sum of its proper divisors (187411525).

2098723457 is an frugal number, since it uses more digits than its factorization.

2098723457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 329 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 2098723457 is about 45811.8266062378. The cubic root of 2098723457 is about 1280.3196339214.

It can be divided in two parts, 20987 and 23457, that added together give a palindrome (44444).

The spelling of 2098723457 in words is "two billion, ninety-eight million, seven hundred twenty-three thousand, four hundred fifty-seven".