1381088537 has 2 divisors, whose sum is σ = 1381088538. Its totient is φ = 1381088536.

The previous prime is 1381088531. The next prime is 1381088539. The reversal of 1381088537 is 7358801831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896164096 + 484924441 = 29936^2 + 22021^2 .

It is an emirp because it is prime and its reverse (7358801831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381088537 - 2³⁰ = 307346713 is a prime.

Together with 1381088539, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1381088531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690544268 + 690544269.

It is an arithmetic number, because the mean of its divisors is an integer number (690544269).

Almost surely, 2^1381088537 is an apocalyptic number.

It is an amenable number.

1381088537 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381088537 is an equidigital number, since it uses as much as digits as its factorization.

1381088537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 1381088537 is about 37162.9995694642. Note that the first 3 decimals coincide. The cubic root of 1381088537 is about 1113.6289359235.

The spelling of 1381088537 in words is "one billion, three hundred eighty-one million, eighty-eight thousand, five hundred thirty-seven".