2151445267 has 2 divisors, whose sum is σ = 2151445268. Its totient is φ = 2151445266.

The previous prime is 2151445249. The next prime is 2151445333. The reversal of 2151445267 is 7625441512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2151445267 - 2¹⁵ = 2151412499 is a prime.

It is not a weakly prime, because it can be changed into another prime (2151445237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075722633 + 1075722634.

It is an arithmetic number, because the mean of its divisors is an integer number (1075722634).

Almost surely, 2^2151445267 is an apocalyptic number.

2151445267 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151445267 is an equidigital number, since it uses as much as digits as its factorization.

2151445267 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 37.

The square root of 2151445267 is about 46383.6745741430. The cubic root of 2151445267 is about 1290.9520178293.

Adding to 2151445267 its reverse (7625441512), we get a palindrome (9776886779).

The spelling of 2151445267 in words is "two billion, one hundred fifty-one million, four hundred forty-five thousand, two hundred sixty-seven".