1940554836 has 144 divisors (see below), whose sum is σ = 5686611840. Its totient is φ = 552303360.

The previous prime is 1940554823. The next prime is 1940554853. The reversal of 1940554836 is 6384550491.

1940554836 is a `hidden beast` number, since 1 + 94 + 0 + 554 + 8 + 3 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1940554791 and 1940554800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 422625 + ... + 427191.

It is an arithmetic number, because the mean of its divisors is an integer number (39490360).

Almost surely, 2^1940554836 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 1940554836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2843305920).

1940554836 is an abundant number, since it is smaller than the sum of its proper divisors (3746057004).

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

1940554836 is a wasteful number, since it uses less digits than its factorization.

1940554836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654 (or 4649 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The square root of 1940554836 is about 44051.7290920572. The cubic root of 1940554836 is about 1247.3125914220.

It can be divided in two parts, 194055 and 4836, that added together give a palindrome (198891).

The spelling of 1940554836 in words is "one billion, nine hundred forty million, five hundred fifty-four thousand, eight hundred thirty-six".