1457181668 has 12 divisors (see below), whose sum is σ = 2684282160. Its totient is φ = 690243912.

The previous prime is 1457181667. The next prime is 1457181683. The reversal of 1457181668 is 8661817541.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1457181667) 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, 9586646 + ... + 9586797.

It is an arithmetic number, because the mean of its divisors is an integer number (223690180).

Almost surely, 2^1457181668 is an apocalyptic number.

It is an amenable number.

1457181668 is a deficient number, since it is larger than the sum of its proper divisors (1227100492).

1457181668 is a wasteful number, since it uses less digits than its factorization.

1457181668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19173466 (or 19173464 counting only the distinct ones).

The product of its digits is 322560, while the sum is 47.

The square root of 1457181668 is about 38173.0489743746. The cubic root of 1457181668 is about 1133.7167583480.

The spelling of 1457181668 in words is "one billion, four hundred fifty-seven million, one hundred eighty-one thousand, six hundred sixty-eight".