1819844934 has 16 divisors (see below), whose sum is σ = 3853789488. Its totient is φ = 570931712.

The previous prime is 1819844861. The next prime is 1819844953. The reversal of 1819844934 is 4394489181.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8920707 + ... + 8920910.

It is an arithmetic number, because the mean of its divisors is an integer number (240861843).

Almost surely, 2^1819844934 is an apocalyptic number.

1819844934 is an abundant number, since it is smaller than the sum of its proper divisors (2033944554).

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

1819844934 is a wasteful number, since it uses less digits than its factorization.

1819844934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17841639.

The product of its digits is 995328, while the sum is 51.

The square root of 1819844934 is about 42659.6405751385. The cubic root of 1819844934 is about 1220.8944739269.

The spelling of 1819844934 in words is "one billion, eight hundred nineteen million, eight hundred forty-four thousand, nine hundred thirty-four".