1373620517 has 2 divisors, whose sum is σ = 1373620518. Its totient is φ = 1373620516.

The previous prime is 1373620483. The next prime is 1373620531. The reversal of 1373620517 is 7150263731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 868539841 + 505080676 = 29471^2 + 22474^2 .

It is a cyclic number.

It is not a de Polignac number, because 1373620517 - 2⁶ = 1373620453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1373620217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 686810258 + 686810259.

It is an arithmetic number, because the mean of its divisors is an integer number (686810259).

Almost surely, 2^1373620517 is an apocalyptic number.

It is an amenable number.

1373620517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1373620517 is an equidigital number, since it uses as much as digits as its factorization.

1373620517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26460, while the sum is 35.

The square root of 1373620517 is about 37062.3868227614. The cubic root of 1373620517 is about 1111.6180490081.

The spelling of 1373620517 in words is "one billion, three hundred seventy-three million, six hundred twenty thousand, five hundred seventeen".