1428368686 has 4 divisors (see below), whose sum is σ = 2142553032. Its totient is φ = 714184342.

The previous prime is 1428368677. The next prime is 1428368687. The reversal of 1428368686 is 6868638241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6868638241 = 2113 ⋅3250657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428368687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 357092170 + ... + 357092173.

It is an arithmetic number, because the mean of its divisors is an integer number (535638258).

Almost surely, 2^1428368686 is an apocalyptic number.

1428368686 is a deficient number, since it is larger than the sum of its proper divisors (714184346).

1428368686 is an equidigital number, since it uses as much as digits as its factorization.

1428368686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714184345.

The product of its digits is 2654208, while the sum is 52.

The square root of 1428368686 is about 37793.7651736368. The cubic root of 1428368686 is about 1126.1945989650.

The spelling of 1428368686 in words is "one billion, four hundred twenty-eight million, three hundred sixty-eight thousand, six hundred eighty-six".