1375137641 has 2 divisors, whose sum is σ = 1375137642. Its totient is φ = 1375137640.

The previous prime is 1375137613. The next prime is 1375137661. The reversal of 1375137641 is 1467315731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1337438041 + 37699600 = 36571^2 + 6140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375137641 - 2²² = 1370943337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1375137595 and 1375137604.

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, 687568820 + 687568821.

It is an arithmetic number, because the mean of its divisors is an integer number (687568821).

Almost surely, 2^1375137641 is an apocalyptic number.

It is an amenable number.

1375137641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375137641 is an equidigital number, since it uses as much as digits as its factorization.

1375137641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52920, while the sum is 38.

The square root of 1375137641 is about 37082.8483398997. The cubic root of 1375137641 is about 1112.0271483913.

The spelling of 1375137641 in words is "one billion, three hundred seventy-five million, one hundred thirty-seven thousand, six hundred forty-one".