1816164829974 has 48 divisors (see below), whose sum is σ = 4058012614320. Its totient is φ = 541330785600.

The previous prime is 1816164829939. The next prime is 1816164830033. The reversal of 1816164829974 is 4799284616181.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20460669 + ... + 20549240.

It is an arithmetic number, because the mean of its divisors is an integer number (84541929465).

Almost surely, 2^{1816164829974} is an apocalyptic number.

1816164829974 is an abundant number, since it is smaller than the sum of its proper divisors (2241847784346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1816164829974 is a wasteful number, since it uses less digits than its factorization.

1816164829974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41009997 (or 41009986 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 66.

The spelling of 1816164829974 in words is "one trillion, eight hundred sixteen billion, one hundred sixty-four million, eight hundred twenty-nine thousand, nine hundred seventy-four".