1228993375 has 8 divisors (see below), whose sum is σ = 1533783888. Its totient is φ = 983194600.

The previous prime is 1228993303. The next prime is 1228993387. The reversal of 1228993375 is 5733998221.

It is a de Polignac number, because none of the positive numbers 2^k-1228993375 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4915849 + ... + 4916098.

It is an arithmetic number, because the mean of its divisors is an integer number (191722986).

Almost surely, 2^1228993375 is an apocalyptic number.

1228993375 is a deficient number, since it is larger than the sum of its proper divisors (304790513).

1228993375 is an frugal number, since it uses more digits than its factorization.

1228993375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9831962 (or 9831952 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 1228993375 is about 35057.0017970733. The cubic root of 1228993375 is about 1071.1489027733.

The spelling of 1228993375 in words is "one billion, two hundred twenty-eight million, nine hundred ninety-three thousand, three hundred seventy-five".