1940471240 has 16 divisors (see below), whose sum is σ = 4366060380. Its totient is φ = 776188480.

The previous prime is 1940471231. The next prime is 1940471261. The reversal of 1940471240 is 421740491.

It can be written as a sum of positive squares in 2 ways, for example, as 1792167556 + 148303684 = 42334^2 + 12178^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1940471197 and 1940471206.

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 3 ways as a sum of consecutive naturals, for example, 24255851 + ... + 24255930.

Almost surely, 2^1940471240 is an apocalyptic number.

1940471240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1940471240 is an abundant number, since it is smaller than the sum of its proper divisors (2425589140).

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

1940471240 is a wasteful number, since it uses less digits than its factorization.

1940471240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48511792 (or 48511788 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 1940471240 is about 44050.7802428061. The cubic root of 1940471240 is about 1247.2946804207.

The spelling of 1940471240 in words is "one billion, nine hundred forty million, four hundred seventy-one thousand, two hundred forty".