1375926641 has 2 divisors, whose sum is σ = 1375926642. Its totient is φ = 1375926640.

The previous prime is 1375926613. The next prime is 1375926649. The reversal of 1375926641 is 1466295731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1369296016 + 6630625 = 37004^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 1375926641 - 2²² = 1371732337 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1375926592 and 1375926601.

It is not a weakly prime, because it can be changed into another prime (1375926649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687963320 + 687963321.

It is an arithmetic number, because the mean of its divisors is an integer number (687963321).

Almost surely, 2^1375926641 is an apocalyptic number.

It is an amenable number.

1375926641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375926641 is an equidigital number, since it uses as much as digits as its factorization.

1375926641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The square root of 1375926641 is about 37093.4851557521. The cubic root of 1375926641 is about 1112.2397869044.

The spelling of 1375926641 in words is "one billion, three hundred seventy-five million, nine hundred twenty-six thousand, six hundred forty-one".