1381954027 has 2 divisors, whose sum is σ = 1381954028. Its totient is φ = 1381954026.

The previous prime is 1381954003. The next prime is 1381954039. The reversal of 1381954027 is 7204591831.

It is a strong prime.

It is an emirp because it is prime and its reverse (7204591831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1381954027 - 2²³ = 1373565419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1381954097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690977013 + 690977014.

It is an arithmetic number, because the mean of its divisors is an integer number (690977014).

Almost surely, 2^1381954027 is an apocalyptic number.

1381954027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381954027 is an equidigital number, since it uses as much as digits as its factorization.

1381954027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 1381954027 is about 37174.6422578617. The cubic root of 1381954027 is about 1113.8615141678.

The spelling of 1381954027 in words is "one billion, three hundred eighty-one million, nine hundred fifty-four thousand, twenty-seven".