1344091381 has 2 divisors, whose sum is σ = 1344091382. Its totient is φ = 1344091380.

The previous prime is 1344091373. The next prime is 1344091423. The reversal of 1344091381 is 1831904431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1126676356 + 217415025 = 33566^2 + 14745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344091381 - 2³ = 1344091373 is a prime.

It is a super-2 number, since 2×1344091381² = 3613163280956974322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1344091351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672045690 + 672045691.

It is an arithmetic number, because the mean of its divisors is an integer number (672045691).

Almost surely, 2^1344091381 is an apocalyptic number.

It is an amenable number.

1344091381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344091381 is an equidigital number, since it uses as much as digits as its factorization.

1344091381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1344091381 is about 36661.8518490269. The cubic root of 1344091381 is about 1103.5946812208.

The spelling of 1344091381 in words is "one billion, three hundred forty-four million, ninety-one thousand, three hundred eighty-one".