1930485140 has 12 divisors (see below), whose sum is σ = 4054018836. Its totient is φ = 772194048.

The previous prime is 1930485127. The next prime is 1930485143. The reversal of 1930485140 is 415840391.

It can be written as a sum of positive squares in 2 ways, for example, as 456078736 + 1474406404 = 21356^2 + 38398^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1930485140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930485143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48262109 + ... + 48262148.

It is an arithmetic number, because the mean of its divisors is an integer number (337834903).

Almost surely, 2^1930485140 is an apocalyptic number.

1930485140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1930485140 is an abundant number, since it is smaller than the sum of its proper divisors (2123533696).

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

1930485140 is a wasteful number, since it uses less digits than its factorization.

1930485140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96524266 (or 96524264 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 1930485140 is about 43937.2864432932. The cubic root of 1930485140 is about 1245.1513802262.

The spelling of 1930485140 in words is "one billion, nine hundred thirty million, four hundred eighty-five thousand, one hundred forty".