1875242381 has 2 divisors, whose sum is σ = 1875242382. Its totient is φ = 1875242380.

The previous prime is 1875242353. The next prime is 1875242387. The reversal of 1875242381 is 1832425781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1403701156 + 471541225 = 37466^2 + 21715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1875242381 is a prime.

It is a super-2 number, since 2×1875242381² = 7033067974997098322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1875242387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 937621190 + 937621191.

It is an arithmetic number, because the mean of its divisors is an integer number (937621191).

Almost surely, 2^1875242381 is an apocalyptic number.

It is an amenable number.

1875242381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1875242381 is an equidigital number, since it uses as much as digits as its factorization.

1875242381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 107520, while the sum is 41.

The square root of 1875242381 is about 43304.0688734904. The cubic root of 1875242381 is about 1233.1591693602.

It can be divided in two parts, 187524 and 2381, that multiplied together give a palindrome (446494644).

The spelling of 1875242381 in words is "one billion, eight hundred seventy-five million, two hundred forty-two thousand, three hundred eighty-one".