1820416545013 has 4 divisors (see below), whose sum is σ = 1985908958208. Its totient is φ = 1654924131820.

The previous prime is 1820416544971. The next prime is 1820416545023. The reversal of 1820416545013 is 3105456140281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1820416545013 - 2²⁹ = 1819879674101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820416545023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82746206581 + ... + 82746206602.

It is an arithmetic number, because the mean of its divisors is an integer number (496477239552).

Almost surely, 2^{1820416545013} is an apocalyptic number.

It is an amenable number.

1820416545013 is a deficient number, since it is larger than the sum of its proper divisors (165492413195).

1820416545013 is a wasteful number, since it uses less digits than its factorization.

1820416545013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165492413194.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 1820416545013 in words is "one trillion, eight hundred twenty billion, four hundred sixteen million, five hundred forty-five thousand, thirteen".