2381968451 has 4 divisors (see below), whose sum is σ = 2382420432. Its totient is φ = 2381516472.

The previous prime is 2381968403. The next prime is 2381968487. The reversal of 2381968451 is 1548691832.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2381968451 - 2⁶ = 2381968387 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2381968396 and 2381968405.

It is not an unprimeable number, because it can be changed into a prime (2381968051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217991 + ... + 228656.

It is an arithmetic number, because the mean of its divisors is an integer number (595605108).

Almost surely, 2^2381968451 is an apocalyptic number.

2381968451 is a deficient number, since it is larger than the sum of its proper divisors (451981).

2381968451 is an equidigital number, since it uses as much as digits as its factorization.

2381968451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451980.

The product of its digits is 414720, while the sum is 47.

The square root of 2381968451 is about 48805.4141566282. The cubic root of 2381968451 is about 1335.5044362666.

The spelling of 2381968451 in words is "two billion, three hundred eighty-one million, nine hundred sixty-eight thousand, four hundred fifty-one".