1373228775 has 96 divisors (see below), whose sum is σ = 2586501120. Its totient is φ = 714147840.

The previous prime is 1373228749. The next prime is 1373228807. The reversal of 1373228775 is 5778223731.

It is a happy number.

It is not a de Polignac number, because 1373228775 - 2⁶ = 1373228711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1373228775.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7115079 + ... + 7115271.

It is an arithmetic number, because the mean of its divisors is an integer number (26942720).

Almost surely, 2^1373228775 is an apocalyptic number.

1373228775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1373228775 is a deficient number, since it is larger than the sum of its proper divisors (1213272345).

1373228775 is a wasteful number, since it uses less digits than its factorization.

1373228775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 411 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 1373228775 is about 37057.1015461274. The cubic root of 1373228775 is about 1111.5123650690.

The spelling of 1373228775 in words is "one billion, three hundred seventy-three million, two hundred twenty-eight thousand, seven hundred seventy-five".