1622172127 has 4 divisors (see below), whose sum is σ = 1624547880. Its totient is φ = 1619796376.

The previous prime is 1622172103. The next prime is 1622172157. The reversal of 1622172127 is 7212712261.

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 1622172127 - 2²³ = 1613783519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622172157) 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, 1186852 + ... + 1188217.

It is an arithmetic number, because the mean of its divisors is an integer number (406136970).

Almost surely, 2^1622172127 is an apocalyptic number.

1622172127 is a deficient number, since it is larger than the sum of its proper divisors (2375753).

1622172127 is an equidigital number, since it uses as much as digits as its factorization.

1622172127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375752.

The product of its digits is 4704, while the sum is 31.

The square root of 1622172127 is about 40276.1980206672. The cubic root of 1622172127 is about 1174.9849708656.

Adding to 1622172127 its reverse (7212712261), we get a palindrome (8834884388).

The spelling of 1622172127 in words is "one billion, six hundred twenty-two million, one hundred seventy-two thousand, one hundred twenty-seven".