1622875961 has 4 divisors (see below), whose sum is σ = 1854715392. Its totient is φ = 1391036532.

The previous prime is 1622875949. The next prime is 1622875967. The reversal of 1622875961 is 1695782261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1622875961 - 2²² = 1618681657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622875967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115919705 + ... + 115919718.

It is an arithmetic number, because the mean of its divisors is an integer number (463678848).

Almost surely, 2^1622875961 is an apocalyptic number.

It is an amenable number.

1622875961 is a deficient number, since it is larger than the sum of its proper divisors (231839431).

1622875961 is an equidigital number, since it uses as much as digits as its factorization.

1622875961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231839430.

The product of its digits is 362880, while the sum is 47.

The square root of 1622875961 is about 40284.9346654553. The cubic root of 1622875961 is about 1175.1548818922.

The spelling of 1622875961 in words is "one billion, six hundred twenty-two million, eight hundred seventy-five thousand, nine hundred sixty-one".