1364721923 has 4 divisors (see below), whose sum is σ = 1364901888. Its totient is φ = 1364541960.

The previous prime is 1364721913. The next prime is 1364721961. The reversal of 1364721923 is 3291274631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1364721923 - 2⁴ = 1364721907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1364721913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78083 + ... + 93948.

It is an arithmetic number, because the mean of its divisors is an integer number (341225472).

Almost surely, 2^1364721923 is an apocalyptic number.

1364721923 is a deficient number, since it is larger than the sum of its proper divisors (179965).

1364721923 is an equidigital number, since it uses as much as digits as its factorization.

1364721923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179964.

The product of its digits is 54432, while the sum is 38.

The square root of 1364721923 is about 36942.1429129389. The cubic root of 1364721923 is about 1109.2124172644.

The spelling of 1364721923 in words is "one billion, three hundred sixty-four million, seven hundred twenty-one thousand, nine hundred twenty-three".