1838549934 has 128 divisors (see below), whose sum is σ = 4656960000. Its totient is φ = 532998144.

The previous prime is 1838549893. The next prime is 1838549941. The reversal of 1838549934 is 4399458381.

1838549934 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 549 + 93 + 4 = 666.

It is a super-3 number, since 3×1838549934³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4094542 + ... + 4094990.

It is an arithmetic number, because the mean of its divisors is an integer number (36382500).

Almost surely, 2^1838549934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1838549934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2328480000).

1838549934 is an abundant number, since it is smaller than the sum of its proper divisors (2818410066).

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

1838549934 is a wasteful number, since it uses less digits than its factorization.

1838549934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799 (or 793 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1838549934 is about 42878.3154286639. The cubic root of 1838549934 is about 1225.0631502083.

The spelling of 1838549934 in words is "one billion, eight hundred thirty-eight million, five hundred forty-nine thousand, nine hundred thirty-four".