1375137613 has 2 divisors, whose sum is σ = 1375137614. Its totient is φ = 1375137612.

The previous prime is 1375137611. The next prime is 1375137641. The reversal of 1375137613 is 3167315731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1367668324 + 7469289 = 36982^2 + 2733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375137613 - 2¹ = 1375137611 is a prime.

Together with 1375137611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1375137611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687568806 + 687568807.

It is an arithmetic number, because the mean of its divisors is an integer number (687568807).

Almost surely, 2^1375137613 is an apocalyptic number.

It is an amenable number.

1375137613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375137613 is an equidigital number, since it uses as much as digits as its factorization.

1375137613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39690, while the sum is 37.

The square root of 1375137613 is about 37082.8479623666. The cubic root of 1375137613 is about 1112.0271408438.

The spelling of 1375137613 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred thirteen".