1538479487 has 2 divisors, whose sum is σ = 1538479488. Its totient is φ = 1538479486.

The previous prime is 1538479471. The next prime is 1538479489. The reversal of 1538479487 is 7849748351.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1538479487 - 2⁴ = 1538479471 is a prime.

Together with 1538479489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538479489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769239743 + 769239744.

It is an arithmetic number, because the mean of its divisors is an integer number (769239744).

Almost surely, 2^1538479487 is an apocalyptic number.

1538479487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538479487 is an equidigital number, since it uses as much as digits as its factorization.

1538479487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 56.

The square root of 1538479487 is about 39223.4558268391. The cubic root of 1538479487 is about 1154.4201625963.

The spelling of 1538479487 in words is "one billion, five hundred thirty-eight million, four hundred seventy-nine thousand, four hundred eighty-seven".