1875380621 has 2 divisors, whose sum is σ = 1875380622. Its totient is φ = 1875380620.

The previous prime is 1875380569. The next prime is 1875380641. The reversal of 1875380621 is 1260835781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960318121 + 915062500 = 30989^2 + 30250^2 .

It is a cyclic number.

It is not a de Polignac number, because 1875380621 - 2³⁰ = 801638797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1875380641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 937690310 + 937690311.

It is an arithmetic number, because the mean of its divisors is an integer number (937690311).

Almost surely, 2^1875380621 is an apocalyptic number.

It is an amenable number.

1875380621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1875380621 is an equidigital number, since it uses as much as digits as its factorization.

1875380621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 1875380621 is about 43305.6649989352. The cubic root of 1875380621 is about 1233.1894708182.

The spelling of 1875380621 in words is "one billion, eight hundred seventy-five million, three hundred eighty thousand, six hundred twenty-one".