1806049871501 has 2 divisors, whose sum is σ = 1806049871502. Its totient is φ = 1806049871500.

The previous prime is 1806049871447. The next prime is 1806049871537. The reversal of 1806049871501 is 1051789406081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1331886797476 + 474163074025 = 1154074^2 + 688595^2 .

It is a cyclic number.

It is not a de Polignac number, because 1806049871501 - 2²⁶ = 1805982762637 is a prime.

It is a super-2 number, since 2×1806049871501² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1806049871501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806049171501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903024935750 + 903024935751.

It is an arithmetic number, because the mean of its divisors is an integer number (903024935751).

Almost surely, 2^{1806049871501} is an apocalyptic number.

It is an amenable number.

1806049871501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806049871501 is an equidigital number, since it uses as much as digits as its factorization.

1806049871501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 1806049871501 in words is "one trillion, eight hundred six billion, forty-nine million, eight hundred seventy-one thousand, five hundred one".