3925451993 has 2 divisors, whose sum is σ = 3925451994. Its totient is φ = 3925451992.

The previous prime is 3925451951. The next prime is 3925452019. The reversal of 3925451993 is 3991545293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3879794944 + 45657049 = 62288^2 + 6757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3925451993 is a prime.

It is not a weakly prime, because it can be changed into another prime (3925451903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1962725996 + 1962725997.

It is an arithmetic number, because the mean of its divisors is an integer number (1962725997).

Almost surely, 2^3925451993 is an apocalyptic number.

It is an amenable number.

3925451993 is a deficient number, since it is larger than the sum of its proper divisors (1).

3925451993 is an equidigital number, since it uses as much as digits as its factorization.

3925451993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 50.

The square root of 3925451993 is about 62653.4276237143. The cubic root of 3925451993 is about 1577.4776815600.

The spelling of 3925451993 in words is "three billion, nine hundred twenty-five million, four hundred fifty-one thousand, nine hundred ninety-three".