1364111921 has 2 divisors, whose sum is σ = 1364111922. Its totient is φ = 1364111920.

The previous prime is 1364111891. The next prime is 1364111929. The reversal of 1364111921 is 1291114631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1362421921 + 1690000 = 36911^2 + 1300^2 .

It is an emirp because it is prime and its reverse (1291114631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1364111921 - 2⁶ = 1364111857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1364111929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682055960 + 682055961.

It is an arithmetic number, because the mean of its divisors is an integer number (682055961).

Almost surely, 2^1364111921 is an apocalyptic number.

It is an amenable number.

1364111921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1364111921 is an equidigital number, since it uses as much as digits as its factorization.

1364111921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 29.

The square root of 1364111921 is about 36933.8858096464. The cubic root of 1364111921 is about 1109.0471277602.

The spelling of 1364111921 in words is "one billion, three hundred sixty-four million, one hundred eleven thousand, nine hundred twenty-one".