1487949013 has 2 divisors, whose sum is σ = 1487949014. Its totient is φ = 1487949012.

The previous prime is 1487948971. The next prime is 1487949031. The reversal of 1487949013 is 3109497841.

Together with next prime (1487949031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1198336689 + 289612324 = 34617^2 + 17018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1487949013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1487949913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 743974506 + 743974507.

It is an arithmetic number, because the mean of its divisors is an integer number (743974507).

Almost surely, 2^1487949013 is an apocalyptic number.

It is an amenable number.

1487949013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487949013 is an equidigital number, since it uses as much as digits as its factorization.

1487949013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1487949013 is about 38573.9421501096. The cubic root of 1487949013 is about 1141.6404547685.

The spelling of 1487949013 in words is "one billion, four hundred eighty-seven million, nine hundred forty-nine thousand, thirteen".