1428193803 has 4 divisors (see below), whose sum is σ = 1904258408. Its totient is φ = 952129200.

The previous prime is 1428193733. The next prime is 1428193807. The reversal of 1428193803 is 3083918241.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1428193803 - 2¹⁷ = 1428062731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428193807) 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, 238032298 + ... + 238032303.

It is an arithmetic number, because the mean of its divisors is an integer number (476064602).

Almost surely, 2^1428193803 is an apocalyptic number.

1428193803 is a deficient number, since it is larger than the sum of its proper divisors (476064605).

1428193803 is an equidigital number, since it uses as much as digits as its factorization.

1428193803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476064604.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 1428193803 is about 37791.4514539995. The cubic root of 1428193803 is about 1126.1486350318.

The spelling of 1428193803 in words is "one billion, four hundred twenty-eight million, one hundred ninety-three thousand, eight hundred three".