1808373953 has 2 divisors, whose sum is σ = 1808373954. Its totient is φ = 1808373952.

The previous prime is 1808373947. The next prime is 1808373961. The reversal of 1808373953 is 3593738081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1735305649 + 73068304 = 41657^2 + 8548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808373953 - 2¹⁴ = 1808357569 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1808373898 and 1808373907.

It is not a weakly prime, because it can be changed into another prime (1808373913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904186976 + 904186977.

It is an arithmetic number, because the mean of its divisors is an integer number (904186977).

Almost surely, 2^1808373953 is an apocalyptic number.

It is an amenable number.

1808373953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808373953 is an equidigital number, since it uses as much as digits as its factorization.

1808373953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 1808373953 is about 42524.9803409714. The cubic root of 1808373953 is about 1218.3238544907.

The spelling of 1808373953 in words is "one billion, eight hundred eight million, three hundred seventy-three thousand, nine hundred fifty-three".