1790331940 has 12 divisors (see below), whose sum is σ = 3759697116. Its totient is φ = 716132768.

The previous prime is 1790331929. The next prime is 1790331941. The reversal of 1790331940 is 491330971.

It can be written as a sum of positive squares in 2 ways, for example, as 742126564 + 1048205376 = 27242^2 + 32376^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1790331940.

It is not an unprimeable number, because it can be changed into a prime (1790331941) 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, 44758279 + ... + 44758318.

It is an arithmetic number, because the mean of its divisors is an integer number (313308093).

Almost surely, 2^1790331940 is an apocalyptic number.

1790331940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1790331940 is an abundant number, since it is smaller than the sum of its proper divisors (1969365176).

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

1790331940 is a wasteful number, since it uses less digits than its factorization.

1790331940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89516606 (or 89516604 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 1790331940 is about 42312.3142831966. The cubic root of 1790331940 is about 1214.2585958155.

The spelling of 1790331940 in words is "one billion, seven hundred ninety million, three hundred thirty-one thousand, nine hundred forty".