3854457961 has 2 divisors, whose sum is σ = 3854457962. Its totient is φ = 3854457960.

The previous prime is 3854457877. The next prime is 3854457977. The reversal of 3854457961 is 1697544583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3384912400 + 469545561 = 58180^2 + 21669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3854457961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3854457899 and 3854457908.

It is not a weakly prime, because it can be changed into another prime (3854257961) 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, 1927228980 + 1927228981.

It is an arithmetic number, because the mean of its divisors is an integer number (1927228981).

Almost surely, 2^3854457961 is an apocalyptic number.

It is an amenable number.

3854457961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3854457961 is an equidigital number, since it uses as much as digits as its factorization.

3854457961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3628800, while the sum is 52.

The square root of 3854457961 is about 62084.2811104389. The cubic root of 3854457961 is about 1567.9099077126.

The spelling of 3854457961 in words is "three billion, eight hundred fifty-four million, four hundred fifty-seven thousand, nine hundred sixty-one".