1320144451 has 2 divisors, whose sum is σ = 1320144452. Its totient is φ = 1320144450.

The previous prime is 1320144407. The next prime is 1320144457. The reversal of 1320144451 is 1544410231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320144451 - 2⁷ = 1320144323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1320144457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660072225 + 660072226.

It is an arithmetic number, because the mean of its divisors is an integer number (660072226).

Almost surely, 2^1320144451 is an apocalyptic number.

1320144451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320144451 is an equidigital number, since it uses as much as digits as its factorization.

1320144451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 1320144451 is about 36333.7921362469. The cubic root of 1320144451 is about 1097.0013234609.

Adding to 1320144451 its reverse (1544410231), we get a palindrome (2864554682).

The spelling of 1320144451 in words is "one billion, three hundred twenty million, one hundred forty-four thousand, four hundred fifty-one".