1487238139 has 2 divisors, whose sum is σ = 1487238140. Its totient is φ = 1487238138.

The previous prime is 1487238097. The next prime is 1487238143. The reversal of 1487238139 is 9318327841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1487238139 - 2⁹ = 1487237627 is a prime.

It is a super-4 number, since 4×1487238139⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1487238169) 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, 743619069 + 743619070.

It is an arithmetic number, because the mean of its divisors is an integer number (743619070).

Almost surely, 2^1487238139 is an apocalyptic number.

1487238139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487238139 is an equidigital number, since it uses as much as digits as its factorization.

1487238139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 1487238139 is about 38564.7266164302. The cubic root of 1487238139 is about 1141.4586179388.

The spelling of 1487238139 in words is "one billion, four hundred eighty-seven million, two hundred thirty-eight thousand, one hundred thirty-nine".