1376225773 has 6 divisors (see below), whose sum is σ = 1482233354. Its totient is φ = 1270238784.

The previous prime is 1376225771. The next prime is 1376225797. The reversal of 1376225773 is 3775226731.

It can be written as a sum of positive squares in 3 ways, for example, as 498762889 + 877462884 = 22333^2 + 29622^2 .

It is not a de Polignac number, because 1376225773 - 2¹ = 1376225771 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376225771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128613 + ... + 138901.

Almost surely, 2^1376225773 is an apocalyptic number.

1376225773 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1376225773 is a deficient number, since it is larger than the sum of its proper divisors (106007581).

1376225773 is an frugal number, since it uses more digits than its factorization.

1376225773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20591 (or 10302 counting only the distinct ones).

The product of its digits is 370440, while the sum is 43.

The square root of 1376225773 is about 37097.5170732490. The cubic root of 1376225773 is about 1112.3203828689.

The spelling of 1376225773 in words is "one billion, three hundred seventy-six million, two hundred twenty-five thousand, seven hundred seventy-three".