1538233466879 has 4 divisors (see below), whose sum is σ = 1542292130760. Its totient is φ = 1534174803000.

The previous prime is 1538233466849. The next prime is 1538233466893. The reversal of 1538233466879 is 9786643328351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1538233466879 - 2²⁴ = 1538216689663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538233466839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2029331372 + ... + 2029332129.

It is an arithmetic number, because the mean of its divisors is an integer number (385573032690).

Almost surely, 2^{1538233466879} is an apocalyptic number.

1538233466879 is a deficient number, since it is larger than the sum of its proper divisors (4058663881).

1538233466879 is an equidigital number, since it uses as much as digits as its factorization.

1538233466879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4058663880.

The product of its digits is 156764160, while the sum is 65.

The spelling of 1538233466879 in words is "one trillion, five hundred thirty-eight billion, two hundred thirty-three million, four hundred sixty-six thousand, eight hundred seventy-nine".