1875423621 has 4 divisors (see below), whose sum is σ = 2500564832. Its totient is φ = 1250282412.

The previous prime is 1875423617. The next prime is 1875423623. The reversal of 1875423621 is 1263245781.

1875423621 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1875423621 - 2² = 1875423617 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1875423621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1875423623) 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, 312570601 + ... + 312570606.

It is an arithmetic number, because the mean of its divisors is an integer number (625141208).

Almost surely, 2^1875423621 is an apocalyptic number.

It is an amenable number.

1875423621 is a deficient number, since it is larger than the sum of its proper divisors (625141211).

1875423621 is an equidigital number, since it uses as much as digits as its factorization.

1875423621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625141210.

The product of its digits is 80640, while the sum is 39.

The square root of 1875423621 is about 43306.1614669322. The cubic root of 1875423621 is about 1233.1988958813.

The spelling of 1875423621 in words is "one billion, eight hundred seventy-five million, four hundred twenty-three thousand, six hundred twenty-one".