3869179981 has 2 divisors, whose sum is σ = 3869179982. Its totient is φ = 3869179980.

The previous prime is 3869179907. The next prime is 3869179987. The reversal of 3869179981 is 1899719683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2569577481 + 1299602500 = 50691^2 + 36050^2 .

It is a cyclic number.

It is not a de Polignac number, because 3869179981 - 2²¹ = 3867082829 is a prime.

It is a super-2 number, since 2×3869179981² = 29941107450742320722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3869179987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934589990 + 1934589991.

It is an arithmetic number, because the mean of its divisors is an integer number (1934589991).

Almost surely, 2^3869179981 is an apocalyptic number.

It is an amenable number.

3869179981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3869179981 is an equidigital number, since it uses as much as digits as its factorization.

3869179981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 61.

The square root of 3869179981 is about 62202.7329061995. The cubic root of 3869179981 is about 1569.9035710989.

The spelling of 3869179981 in words is "three billion, eight hundred sixty-nine million, one hundred seventy-nine thousand, nine hundred eighty-one".