3779135981 has 2 divisors, whose sum is σ = 3779135982. Its totient is φ = 3779135980.

The previous prime is 3779135963. The next prime is 3779136013. The reversal of 3779135981 is 1895319773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3239317225 + 539818756 = 56915^2 + 23234^2 .

It is a cyclic number.

It is not a de Polignac number, because 3779135981 - 2²⁶ = 3712027117 is a prime.

It is a super-2 number, since 2×3779135981² = 28563737525777664722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3779135081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1889567990 + 1889567991.

It is an arithmetic number, because the mean of its divisors is an integer number (1889567991).

Almost surely, 2^3779135981 is an apocalyptic number.

It is an amenable number.

3779135981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3779135981 is an equidigital number, since it uses as much as digits as its factorization.

3779135981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1428840, while the sum is 53.

The square root of 3779135981 is about 61474.6775591381. The cubic root of 3779135981 is about 1557.6295333216.

The spelling of 3779135981 in words is "three billion, seven hundred seventy-nine million, one hundred thirty-five thousand, nine hundred eighty-one".