1457394731 has 8 divisors (see below), whose sum is σ = 1578576720. Its totient is φ = 1337509152.

The previous prime is 1457394713. The next prime is 1457394761. The reversal of 1457394731 is 1374937541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1457394731 - 2¹⁴ = 1457378347 is a prime.

It is a super-2 number, since 2×1457394731² = 4247998803893124722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1457394761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321761 + ... + 326258.

It is an arithmetic number, because the mean of its divisors is an integer number (197322090).

Almost surely, 2^1457394731 is an apocalyptic number.

1457394731 is a deficient number, since it is larger than the sum of its proper divisors (121181989).

1457394731 is a wasteful number, since it uses less digits than its factorization.

1457394731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648205.

The product of its digits is 317520, while the sum is 44.

The square root of 1457394731 is about 38175.8396240345. The cubic root of 1457394731 is about 1133.7720114270.

The spelling of 1457394731 in words is "one billion, four hundred fifty-seven million, three hundred ninety-four thousand, seven hundred thirty-one".