1622161563 has 8 divisors (see below), whose sum is σ = 2359507776. Its totient is φ = 983128200.

The previous prime is 1622161547. The next prime is 1622161579. The reversal of 1622161563 is 3651612261.

It is an interprime number because it is at equal distance from previous prime (1622161547) and next prime (1622161579).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1622161563 - 2⁴ = 1622161547 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 49156411 = 1622161563 / (1 + 6 + 2 + 2 + 1 + 6 + 1 + 5 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (1622161763) 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 7 ways as a sum of consecutive naturals, for example, 24578173 + ... + 24578238.

It is an arithmetic number, because the mean of its divisors is an integer number (294938472).

Almost surely, 2^1622161563 is an apocalyptic number.

1622161563 is a deficient number, since it is larger than the sum of its proper divisors (737346213).

1622161563 is a wasteful number, since it uses less digits than its factorization.

1622161563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49156425.

The product of its digits is 12960, while the sum is 33.

The square root of 1622161563 is about 40276.0668759997. The cubic root of 1622161563 is about 1174.9824202591.

The spelling of 1622161563 in words is "one billion, six hundred twenty-two million, one hundred sixty-one thousand, five hundred sixty-three".