1620000022 has 4 divisors (see below), whose sum is σ = 2430000036. Its totient is φ = 810000010.

The previous prime is 1619999987. The next prime is 1620000029. The reversal of 1620000022 is 2200000261.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1619999957 and 1620000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620000029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405000004 + ... + 405000007.

It is an arithmetic number, because the mean of its divisors is an integer number (607500009).

Almost surely, 2^1620000022 is an apocalyptic number.

1620000022 is a deficient number, since it is larger than the sum of its proper divisors (810000014).

1620000022 is an equidigital number, since it uses as much as digits as its factorization.

1620000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810000013.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1620000022 is about 40249.2238682934. The cubic root of 1620000022 is about 1174.4602976671.

Adding to 1620000022 its reverse (2200000261), we get a palindrome (3820000283).

The spelling of 1620000022 in words is "one billion, six hundred twenty million, twenty-two", and thus it is an aban number.