1940581330 has 8 divisors (see below), whose sum is σ = 3493046412. Its totient is φ = 776232528.

The previous prime is 1940581319. The next prime is 1940581337. The reversal of 1940581330 is 331850491.

It can be written as a sum of positive squares in 2 ways, for example, as 1938024529 + 2556801 = 44023^2 + 1599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1940581337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97029057 + ... + 97029076.

Almost surely, 2^1940581330 is an apocalyptic number.

1940581330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1940581330 is a deficient number, since it is larger than the sum of its proper divisors (1552465082).

1940581330 is a wasteful number, since it uses less digits than its factorization.

1940581330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194058140.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1940581330 is about 44052.0298056741. The cubic root of 1940581330 is about 1247.3182678311.

The spelling of 1940581330 in words is "one billion, nine hundred forty million, five hundred eighty-one thousand, three hundred thirty".