1622287609 has 4 divisors (see below), whose sum is σ = 1624544640. Its totient is φ = 1620030580.

The previous prime is 1622287603. The next prime is 1622287633. The reversal of 1622287609 is 9067822261.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9067822261 = 2141 ⋅4235321.

It is a cyclic number.

It is not a de Polignac number, because 1622287609 - 2⁷ = 1622287481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1622287603) 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, 1127437 + ... + 1128874.

It is an arithmetic number, because the mean of its divisors is an integer number (406136160).

Almost surely, 2^1622287609 is an apocalyptic number.

It is an amenable number.

1622287609 is a deficient number, since it is larger than the sum of its proper divisors (2257031).

1622287609 is an equidigital number, since it uses as much as digits as its factorization.

1622287609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257030.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1622287609 is about 40277.6316210375. The cubic root of 1622287609 is about 1175.0128524926.

The spelling of 1622287609 in words is "one billion, six hundred twenty-two million, two hundred eighty-seven thousand, six hundred nine".