23868087049 has 3 divisors (see below), whose sum is σ = 23868241543. Its totient is φ = 23867932556.

The previous prime is 23868087037. The next prime is 23868087073. The reversal of 23868087049 is 94078086832.

The square root of 23868087049 is 154493.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 296012025 + 23572075024 = 17205^2 + 153532^2 .

It is not a de Polignac number, because 23868087049 - 2⁹ = 23868086537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23868087079) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 77247 + ... + 231739.

Almost surely, 2^23868087049 is an apocalyptic number.

23868087049 is the 154493-rd square number.

23868087049 is the 77247-th centered octagonal number.

It is an amenable number.

23868087049 is a deficient number, since it is larger than the sum of its proper divisors (154494).

23868087049 is an frugal number, since it uses more digits than its factorization.

23868087049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308986 (or 154493 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 55.

The spelling of 23868087049 in words is "twenty-three billion, eight hundred sixty-eight million, eighty-seven thousand, forty-nine".