1341806381 has 2 divisors, whose sum is σ = 1341806382. Its totient is φ = 1341806380.

The previous prime is 1341806377. The next prime is 1341806393. The reversal of 1341806381 is 1836081431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1252806025 + 89000356 = 35395^2 + 9434^2 .

It is an emirp because it is prime and its reverse (1836081431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1341806381 - 2² = 1341806377 is a prime.

It is a super-2 number, since 2×1341806381² = 3600888728184634322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1341806881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670903190 + 670903191.

It is an arithmetic number, because the mean of its divisors is an integer number (670903191).

Almost surely, 2^1341806381 is an apocalyptic number.

It is an amenable number.

1341806381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1341806381 is an equidigital number, since it uses as much as digits as its factorization.

1341806381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1341806381 is about 36630.6754100986. The cubic root of 1341806381 is about 1102.9689439550.

The spelling of 1341806381 in words is "one billion, three hundred forty-one million, eight hundred six thousand, three hundred eighty-one".