1622872451 has 4 divisors (see below), whose sum is σ = 1678833600. Its totient is φ = 1566911304.

The previous prime is 1622872397. The next prime is 1622872453. The reversal of 1622872451 is 1542782261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1542782261 = 22651 ⋅68111.

It is a cyclic number.

It is not a de Polignac number, because 1622872451 - 2¹⁰ = 1622871427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622872453) 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 in 3 ways as a sum of consecutive naturals, for example, 27980531 + ... + 27980588.

It is an arithmetic number, because the mean of its divisors is an integer number (419708400).

Almost surely, 2^1622872451 is an apocalyptic number.

1622872451 is a deficient number, since it is larger than the sum of its proper divisors (55961149).

1622872451 is an equidigital number, since it uses as much as digits as its factorization.

1622872451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55961148.

The product of its digits is 53760, while the sum is 38.

The square root of 1622872451 is about 40284.8911007589. The cubic root of 1622872451 is about 1175.1540346727.

The spelling of 1622872451 in words is "one billion, six hundred twenty-two million, eight hundred seventy-two thousand, four hundred fifty-one".