1622613838 has 4 divisors (see below), whose sum is σ = 2433920760. Its totient is φ = 811306918.

The previous prime is 1622613833. The next prime is 1622613857. The reversal of 1622613838 is 8383162261.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1622613838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1622613833) 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 as a sum of consecutive naturals, namely, 405653458 + ... + 405653461.

It is an arithmetic number, because the mean of its divisors is an integer number (608480190).

Almost surely, 2^1622613838 is an apocalyptic number.

1622613838 is a deficient number, since it is larger than the sum of its proper divisors (811306922).

1622613838 is an equidigital number, since it uses as much as digits as its factorization.

1622613838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811306921.

The product of its digits is 82944, while the sum is 40.

The square root of 1622613838 is about 40281.6811714705. The cubic root of 1622613838 is about 1175.0916090941.

The spelling of 1622613838 in words is "one billion, six hundred twenty-two million, six hundred thirteen thousand, eight hundred thirty-eight".