1826903800397 has 8 divisors (see below), whose sum is σ = 1984845791544. Its totient is φ = 1671449084928.

The previous prime is 1826903800349. The next prime is 1826903800459. The reversal of 1826903800397 is 7930083096281.

It can be written as a sum of positive squares in 4 ways, for example, as 767788681 + 1826136011716 = 27709^2 + 1351346^2 .

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 1826903800397 - 2¹⁸ = 1826903538253 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 (1826903800597) 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, 621817388 + ... + 621820325.

It is an arithmetic number, because the mean of its divisors is an integer number (248105723943).

Almost surely, 2^{1826903800397} is an apocalyptic number.

It is an amenable number.

1826903800397 is a deficient number, since it is larger than the sum of its proper divisors (157941991147).

1826903800397 is a wasteful number, since it uses less digits than its factorization.

1826903800397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243637839.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 1826903800397 in words is "one trillion, eight hundred twenty-six billion, nine hundred three million, eight hundred thousand, three hundred ninety-seven".