4457451623 has 4 divisors (see below), whose sum is σ = 4692054360. Its totient is φ = 4222848888.

The previous prime is 4457451619. The next prime is 4457451637. The reversal of 4457451623 is 3261547544.

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 4457451623 - 2² = 4457451619 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 (4457421623) 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, 117301340 + ... + 117301377.

It is an arithmetic number, because the mean of its divisors is an integer number (1173013590).

Almost surely, 2^4457451623 is an apocalyptic number.

4457451623 is a deficient number, since it is larger than the sum of its proper divisors (234602737).

4457451623 is a wasteful number, since it uses less digits than its factorization.

4457451623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234602736.

The product of its digits is 403200, while the sum is 41.

The square root of 4457451623 is about 66764.1492344507. The cubic root of 4457451623 is about 1645.7437437779.

The spelling of 4457451623 in words is "four billion, four hundred fifty-seven million, four hundred fifty-one thousand, six hundred twenty-three".