1821630486475 has 12 divisors (see below), whose sum is σ = 2284201826280. Its totient is φ = 1440930180800.

The previous prime is 1821630486463. The next prime is 1821630486493. The reversal of 1821630486475 is 5746840361281.

It is not a de Polignac number, because 1821630486475 - 2¹⁷ = 1821630355403 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 409352941 + ... + 409357390.

It is an arithmetic number, because the mean of its divisors is an integer number (190350152190).

Almost surely, 2^{1821630486475} is an apocalyptic number.

1821630486475 is a deficient number, since it is larger than the sum of its proper divisors (462571339805).

1821630486475 is an equidigital number, since it uses as much as digits as its factorization.

1821630486475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818710430 (or 818710425 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 1821630486475 in words is "one trillion, eight hundred twenty-one billion, six hundred thirty million, four hundred eighty-six thousand, four hundred seventy-five".