1938754836 has 72 divisors (see below), whose sum is σ = 4993794624. Its totient is φ = 634089600.

The previous prime is 1938754819. The next prime is 1938754837. The reversal of 1938754836 is 6384578391.

1938754836 is a `hidden beast` number, since 1 + 93 + 8 + 7 + 548 + 3 + 6 = 666.

It is a super-2 number, since 2×1938754836² = 7517540628226773792, which contains 22 as substring.

Its product of digits (4354560) is a multiple of the sum of its prime divisors (4536).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938754837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 449040 + ... + 453336.

Almost surely, 2^1938754836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1938754836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2496897312).

1938754836 is an abundant number, since it is smaller than the sum of its proper divisors (3055039788).

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

1938754836 is a wasteful number, since it uses less digits than its factorization.

1938754836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4541 (or 4536 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 1938754836 is about 44031.2938260960. The cubic root of 1938754836 is about 1246.9268156355.

The spelling of 1938754836 in words is "one billion, nine hundred thirty-eight million, seven hundred fifty-four thousand, eight hundred thirty-six".