1538109532259 has 2 divisors, whose sum is σ = 1538109532260. Its totient is φ = 1538109532258.

The previous prime is 1538109532241. The next prime is 1538109532279. The reversal of 1538109532259 is 9522359018351.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538109532259 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1538109532259.

It is not a weakly prime, because it can be changed into another prime (1538109532229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769054766129 + 769054766130.

It is an arithmetic number, because the mean of its divisors is an integer number (769054766130).

Almost surely, 2^{1538109532259} is an apocalyptic number.

1538109532259 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538109532259 is an equidigital number, since it uses as much as digits as its factorization.

1538109532259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916000, while the sum is 53.

The spelling of 1538109532259 in words is "one trillion, five hundred thirty-eight billion, one hundred nine million, five hundred thirty-two thousand, two hundred fifty-nine".