1428357907 has 4 divisors (see below), whose sum is σ = 1448475696. Its totient is φ = 1408240120.

The previous prime is 1428357863. The next prime is 1428357911. The reversal of 1428357907 is 7097538241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7097538241 = 2879 ⋅2465279.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428357907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428357407) 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, 10058788 + ... + 10058929.

It is an arithmetic number, because the mean of its divisors is an integer number (362118924).

Almost surely, 2^1428357907 is an apocalyptic number.

1428357907 is a deficient number, since it is larger than the sum of its proper divisors (20117789).

1428357907 is an equidigital number, since it uses as much as digits as its factorization.

1428357907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20117788.

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 1428357907 is about 37793.6225704814. The cubic root of 1428357907 is about 1126.1917660638.

The spelling of 1428357907 in words is "one billion, four hundred twenty-eight million, three hundred fifty-seven thousand, nine hundred seven".