1538981602315 has 16 divisors (see below), whose sum is σ = 1849158475776. Its totient is φ = 1229598770400.

The previous prime is 1538981602289. The next prime is 1538981602373. The reversal of 1538981602315 is 5132061898351.

It is a happy number.

It is not a de Polignac number, because 1538981602315 - 2¹⁵ = 1538981569547 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 26129950 + ... + 26188780.

It is an arithmetic number, because the mean of its divisors is an integer number (115572404736).

Almost surely, 2^{1538981602315} is an apocalyptic number.

1538981602315 is a deficient number, since it is larger than the sum of its proper divisors (310176873461).

1538981602315 is an equidigital number, since it uses as much as digits as its factorization.

1538981602315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65490.

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 1538981602315 in words is "one trillion, five hundred thirty-eight billion, nine hundred eighty-one million, six hundred two thousand, three hundred fifteen".