1343640161 has 8 divisors (see below), whose sum is σ = 1388385024. Its totient is φ = 1298982960.

The previous prime is 1343640149. The next prime is 1343640187. The reversal of 1343640161 is 1610463431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1343640161 - 2⁶ = 1343640097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1343640191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10010 + ... + 52796.

It is an arithmetic number, because the mean of its divisors is an integer number (173548128).

Almost surely, 2^1343640161 is an apocalyptic number.

It is an amenable number.

1343640161 is a deficient number, since it is larger than the sum of its proper divisors (44744863).

1343640161 is a wasteful number, since it uses less digits than its factorization.

1343640161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43831.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 1343640161 is about 36655.6975243958. The cubic root of 1343640161 is about 1103.4711728213.

The spelling of 1343640161 in words is "one billion, three hundred forty-three million, six hundred forty thousand, one hundred sixty-one".