1875005990 has 144 divisors (see below), whose sum is σ = 4247283600. Its totient is φ = 590653440.

The previous prime is 1875005959. The next prime is 1875005999. The reversal of 1875005990 is 995005781.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1875005999) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5372336 + ... + 5372684.

It is an arithmetic number, because the mean of its divisors is an integer number (29495025).

Almost surely, 2^1875005990 is an apocalyptic number.

1875005990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1875005990 is an abundant number, since it is smaller than the sum of its proper divisors (2372277610).

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

1875005990 is a wasteful number, since it uses less digits than its factorization.

1875005990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 1875005990 is about 43301.3393557289. The cubic root of 1875005990 is about 1233.1073502848.

The spelling of 1875005990 in words is "one billion, eight hundred seventy-five million, five thousand, nine hundred ninety".