1641283938 has 64 divisors (see below), whose sum is σ = 4413553920. Its totient is φ = 441351936.

The previous prime is 1641283937. The next prime is 1641283949. The reversal of 1641283938 is 8393821461.

It is a junction number, because it is equal to n+sod(n) for n = 1641283893 and 1641283902.

It is not an unprimeable number, because it can be changed into a prime (1641283937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121281 + ... + 134132.

It is an arithmetic number, because the mean of its divisors is an integer number (68961780).

Almost surely, 2^1641283938 is an apocalyptic number.

1641283938 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1641283938 is an abundant number, since it is smaller than the sum of its proper divisors (2772269982).

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

1641283938 is a wasteful number, since it uses less digits than its factorization.

1641283938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255448 (or 255442 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 1641283938 is about 40512.7626557360. The cubic root of 1641283938 is about 1179.5813745327.

The spelling of 1641283938 in words is "one billion, six hundred forty-one million, two hundred eighty-three thousand, nine hundred thirty-eight".