3947201543 has 2 divisors, whose sum is σ = 3947201544. Its totient is φ = 3947201542.

The previous prime is 3947201519. The next prime is 3947201561. The reversal of 3947201543 is 3451027493.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3947201543 - 2¹² = 3947197447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3947201497 and 3947201506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3947201443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973600771 + 1973600772.

It is an arithmetic number, because the mean of its divisors is an integer number (1973600772).

Almost surely, 2^3947201543 is an apocalyptic number.

3947201543 is a deficient number, since it is larger than the sum of its proper divisors (1).

3947201543 is an equidigital number, since it uses as much as digits as its factorization.

3947201543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 3947201543 is about 62826.7581767514. The cubic root of 3947201543 is about 1580.3857338134.

The spelling of 3947201543 in words is "three billion, nine hundred forty-seven million, two hundred one thousand, five hundred forty-three".