1820358934663 has 8 divisors (see below), whose sum is σ = 1888261087680. Its totient is φ = 1752798858720.

The previous prime is 1820358934643. The next prime is 1820358934727. The reversal of 1820358934663 is 3664398530281.

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

It is a cyclic number.

It is not a de Polignac number, because 1820358934663 - 2²⁹ = 1819822063751 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1820358934598 and 1820358934607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820358934643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85508428 + ... + 85529713.

It is an arithmetic number, because the mean of its divisors is an integer number (236032635960).

Almost surely, 2^{1820358934663} is an apocalyptic number.

1820358934663 is a deficient number, since it is larger than the sum of its proper divisors (67902153017).

1820358934663 is a wasteful number, since it uses less digits than its factorization.

1820358934663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171038537.

The product of its (nonzero) digits is 22394880, while the sum is 58.

The spelling of 1820358934663 in words is "one trillion, eight hundred twenty billion, three hundred fifty-eight million, nine hundred thirty-four thousand, six hundred sixty-three".