15138707 has 2 divisors, whose sum is σ = 15138708. Its totient is φ = 15138706.

The previous prime is 15138689. The next prime is 15138719. The reversal of 15138707 is 70783151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15138707 - 2¹⁴ = 15122323 is a prime.

It is not a weakly prime, because it can be changed into another prime (15198707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7569353 + 7569354.

It is an arithmetic number, because the mean of its divisors is an integer number (7569354).

Almost surely, 2^15138707 is an apocalyptic number.

15138707 is a deficient number, since it is larger than the sum of its proper divisors (1).

15138707 is an equidigital number, since it uses as much as digits as its factorization.

15138707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 15138707 is about 3890.8491361141. The cubic root of 15138707 is about 247.3790559651.

The spelling of 15138707 in words is "fifteen million, one hundred thirty-eight thousand, seven hundred seven".