1373557793 has 2 divisors, whose sum is σ = 1373557794. Its totient is φ = 1373557792.

The previous prime is 1373557673. The next prime is 1373557813. The reversal of 1373557793 is 3977553731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 861305104 + 512252689 = 29348^2 + 22633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373557793 - 2¹⁴ = 1373541409 is a prime.

It is a super-2 number, since 2×1373557793² = 3773322021422061698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1373557193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686778896 + 686778897.

It is an arithmetic number, because the mean of its divisors is an integer number (686778897).

Almost surely, 2^1373557793 is an apocalyptic number.

It is an amenable number.

1373557793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373557793 is an equidigital number, since it uses as much as digits as its factorization.

1373557793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2083725, while the sum is 50.

The square root of 1373557793 is about 37061.5406182744. The cubic root of 1373557793 is about 1111.6011287134.

The spelling of 1373557793 in words is "one billion, three hundred seventy-three million, five hundred fifty-seven thousand, seven hundred ninety-three".