1931825730 has 16 divisors (see below), whose sum is σ = 4636381824. Its totient is φ = 515153520.

The previous prime is 1931825711. The next prime is 1931825801. The reversal of 1931825730 is 375281391.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32197066 + ... + 32197125.

It is an arithmetic number, because the mean of its divisors is an integer number (289773864).

Almost surely, 2^1931825730 is an apocalyptic number.

1931825730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1931825730 is an abundant number, since it is smaller than the sum of its proper divisors (2704556094).

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

1931825730 is a wasteful number, since it uses less digits than its factorization.

1931825730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64394201.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1931825730 is about 43952.5395170746. The cubic root of 1931825730 is about 1245.4395377145.

The spelling of 1931825730 in words is "one billion, nine hundred thirty-one million, eight hundred twenty-five thousand, seven hundred thirty".