3954620881 has 2 divisors, whose sum is σ = 3954620882. Its totient is φ = 3954620880.

The previous prime is 3954620849. The next prime is 3954620899. The reversal of 3954620881 is 1880264593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3370963600 + 583657281 = 58060^2 + 24159^2 .

It is an emirp because it is prime and its reverse (1880264593) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3954620881 - 2⁵ = 3954620849 is a prime.

It is a super-2 number, since 2×3954620881² = 31278052624882432322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3954620581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1977310440 + 1977310441.

It is an arithmetic number, because the mean of its divisors is an integer number (1977310441).

Almost surely, 2^3954620881 is an apocalyptic number.

It is an amenable number.

3954620881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3954620881 is an equidigital number, since it uses as much as digits as its factorization.

3954620881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 3954620881 is about 62885.7764601822. The cubic root of 3954620881 is about 1581.3753021547.

The spelling of 3954620881 in words is "three billion, nine hundred fifty-four million, six hundred twenty thousand, eight hundred eighty-one".