1878213812523 has 8 divisors (see below), whose sum is σ = 2506332745728. Its totient is φ = 1251118710504.

The previous prime is 1878213812483. The next prime is 1878213812533. The reversal of 1878213812523 is 3252183128781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1878213812523 - 2¹³ = 1878213804331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1878213812533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 255953515 + ... + 255960852.

It is an arithmetic number, because the mean of its divisors is an integer number (313291593216).

Almost surely, 2^{1878213812523} is an apocalyptic number.

1878213812523 is a deficient number, since it is larger than the sum of its proper divisors (628118933205).

1878213812523 is a wasteful number, since it uses less digits than its factorization.

1878213812523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511915593.

The product of its digits is 1290240, while the sum is 51.

The spelling of 1878213812523 in words is "one trillion, eight hundred seventy-eight billion, two hundred thirteen million, eight hundred twelve thousand, five hundred twenty-three".