2453997871 has 4 divisors (see below), whose sum is σ = 2642766952. Its totient is φ = 2265228792.

The previous prime is 2453997863. The next prime is 2453997911. The reversal of 2453997871 is 1787993542.

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 2453997871 - 2³ = 2453997863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2453997971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94384521 + ... + 94384546.

It is an arithmetic number, because the mean of its divisors is an integer number (660691738).

Almost surely, 2^2453997871 is an apocalyptic number.

2453997871 is a deficient number, since it is larger than the sum of its proper divisors (188769081).

2453997871 is a wasteful number, since it uses less digits than its factorization.

2453997871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188769080.

The product of its digits is 3810240, while the sum is 55.

The square root of 2453997871 is about 49537.8428173856. The cubic root of 2453997871 is about 1348.8326206409.

The spelling of 2453997871 in words is "two billion, four hundred fifty-three million, nine hundred ninety-seven thousand, eight hundred seventy-one".