1801841037499 has 2 divisors, whose sum is σ = 1801841037500. Its totient is φ = 1801841037498.

The previous prime is 1801841037467. The next prime is 1801841037509. The reversal of 1801841037499 is 9947301481081.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1801841037499 - 2⁵ = 1801841037467 is a prime.

It is a super-2 number, since 2×1801841037499² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1801841032499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900920518749 + 900920518750.

It is an arithmetic number, because the mean of its divisors is an integer number (900920518750).

Almost surely, 2^{1801841037499} is an apocalyptic number.

1801841037499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1801841037499 is an equidigital number, since it uses as much as digits as its factorization.

1801841037499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 55.

The spelling of 1801841037499 in words is "one trillion, eight hundred one billion, eight hundred forty-one million, thirty-seven thousand, four hundred ninety-nine".