1851001850111 has 2 divisors, whose sum is σ = 1851001850112. Its totient is φ = 1851001850110.

The previous prime is 1851001850101. The next prime is 1851001850119. The reversal of 1851001850111 is 1110581001581.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1851001850111 is a prime.

It is a super-2 number, since 2×1851001850111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1851001850119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925500925055 + 925500925056.

It is an arithmetic number, because the mean of its divisors is an integer number (925500925056).

Almost surely, 2^{1851001850111} is an apocalyptic number.

1851001850111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851001850111 is an equidigital number, since it uses as much as digits as its factorization.

1851001850111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1600, while the sum is 32.

Adding to 1851001850111 its reverse (1110581001581), we get a palindrome (2961582851692).

The spelling of 1851001850111 in words is "one trillion, eight hundred fifty-one billion, one million, eight hundred fifty thousand, one hundred eleven".