1381454623 has 2 divisors, whose sum is σ = 1381454624. Its totient is φ = 1381454622.

The previous prime is 1381454587. The next prime is 1381454639. The reversal of 1381454623 is 3264541831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1381454623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381454923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690727311 + 690727312.

It is an arithmetic number, because the mean of its divisors is an integer number (690727312).

Almost surely, 2^1381454623 is an apocalyptic number.

1381454623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381454623 is an equidigital number, since it uses as much as digits as its factorization.

1381454623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 37.

The square root of 1381454623 is about 37167.9246528509. The cubic root of 1381454623 is about 1113.7273240030.

The spelling of 1381454623 in words is "one billion, three hundred eighty-one million, four hundred fifty-four thousand, six hundred twenty-three".