1861486366103 has 16 divisors (see below), whose sum is σ = 2411642257920. Its totient is φ = 1395307303776.

The previous prime is 1861486366079. The next prime is 1861486366111. The reversal of 1861486366103 is 3016636841681.

It is a cyclic number.

It is not a de Polignac number, because 1861486366103 - 2²⁶ = 1861419257239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861486366123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538311275 + ... + 538314732.

It is an arithmetic number, because the mean of its divisors is an integer number (150727641120).

Almost surely, 2^{1861486366103} is an apocalyptic number.

1861486366103 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1861486366103 is a deficient number, since it is larger than the sum of its proper divisors (550155891817).

1861486366103 is a wasteful number, since it uses less digits than its factorization.

1861486366103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1076626046.

The product of its (nonzero) digits is 2985984, while the sum is 53.

The spelling of 1861486366103 in words is "one trillion, eight hundred sixty-one billion, four hundred eighty-six million, three hundred sixty-six thousand, one hundred three".