1371913 has 2 divisors, whose sum is σ = 1371914. Its totient is φ = 1371912.

The previous prime is 1371911. The next prime is 1371943. The reversal of 1371913 is 3191731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1026169 + 345744 = 1013^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371913 - 2¹ = 1371911 is a prime.

Together with 1371911, it forms a pair of twin primes.

1371913 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1371911) 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 as a sum of consecutive naturals, namely, 685956 + 685957.

It is an arithmetic number, because the mean of its divisors is an integer number (685957).

2^1371913 is an apocalyptic number.

It is an amenable number.

1371913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1371913 is an equidigital number, since it uses as much as digits as its factorization.

1371913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 567, while the sum is 25.

The square root of 1371913 is about 1171.2868990986. The cubic root of 1371913 is about 111.1157248825.

The spelling of 1371913 in words is "one million, three hundred seventy-one thousand, nine hundred thirteen".