1327620451 has 2 divisors, whose sum is σ = 1327620452. Its totient is φ = 1327620450.

The previous prime is 1327620443. The next prime is 1327620509. The reversal of 1327620451 is 1540267231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1327620451 - 2³ = 1327620443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1327620431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663810225 + 663810226.

It is an arithmetic number, because the mean of its divisors is an integer number (663810226).

Almost surely, 2^1327620451 is an apocalyptic number.

1327620451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327620451 is an equidigital number, since it uses as much as digits as its factorization.

1327620451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1327620451 is about 36436.5263300441. The cubic root of 1327620451 is about 1099.0682056790.

Adding to 1327620451 its reverse (1540267231), we get a palindrome (2867887682).

The spelling of 1327620451 in words is "one billion, three hundred twenty-seven million, six hundred twenty thousand, four hundred fifty-one".