1818432641037 has 32 divisors (see below), whose sum is σ = 2462210150400. Its totient is φ = 1193656988160.

The previous prime is 1818432641017. The next prime is 1818432641093. The reversal of 1818432641037 is 7301462348181.

It is not a de Polignac number, because 1818432641037 - 2⁷ = 1818432640909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818432641017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25287988 + ... + 25359794.

It is an arithmetic number, because the mean of its divisors is an integer number (76944067200).

Almost surely, 2^{1818432641037} is an apocalyptic number.

It is an amenable number.

1818432641037 is a deficient number, since it is larger than the sum of its proper divisors (643777509363).

1818432641037 is a wasteful number, since it uses less digits than its factorization.

1818432641037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72453.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 1818432641037 in words is "one trillion, eight hundred eighteen billion, four hundred thirty-two million, six hundred forty-one thousand, thirty-seven".