15138463 has 2 divisors, whose sum is σ = 15138464. Its totient is φ = 15138462.

The previous prime is 15138457. The next prime is 15138523. The reversal of 15138463 is 36483151.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15138463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15138413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7569231 + 7569232.

It is an arithmetic number, because the mean of its divisors is an integer number (7569232).

Almost surely, 2^15138463 is an apocalyptic number.

15138463 is a deficient number, since it is larger than the sum of its proper divisors (1).

15138463 is an equidigital number, since it uses as much as digits as its factorization.

15138463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 15138463 is about 3890.8177803644. The cubic root of 15138463 is about 247.3777269037.

The spelling of 15138463 in words is "fifteen million, one hundred thirty-eight thousand, four hundred sixty-three".