1538387423 has 2 divisors, whose sum is σ = 1538387424. Its totient is φ = 1538387422.

The previous prime is 1538387387. The next prime is 1538387429. The reversal of 1538387423 is 3247838351.

It is a strong prime.

It is an emirp because it is prime and its reverse (3247838351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1538387423 - 2¹⁸ = 1538125279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538387429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769193711 + 769193712.

It is an arithmetic number, because the mean of its divisors is an integer number (769193712).

Almost surely, 2^1538387423 is an apocalyptic number.

1538387423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538387423 is an equidigital number, since it uses as much as digits as its factorization.

1538387423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 1538387423 is about 39222.2822257961. The cubic root of 1538387423 is about 1154.3971349557.

The spelling of 1538387423 in words is "one billion, five hundred thirty-eight million, three hundred eighty-seven thousand, four hundred twenty-three".