1620236234 has 8 divisors (see below), whose sum is σ = 2431967328. Its totient is φ = 809580460.

The previous prime is 1620236213. The next prime is 1620236239. The reversal of 1620236234 is 4326320261.

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

It is a junction number, because it is equal to n+sod(n) for n = 1620236197 and 1620236206.

It is not an unprimeable number, because it can be changed into a prime (1620236239) 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, 265052 + ... + 271095.

It is an arithmetic number, because the mean of its divisors is an integer number (303995916).

Almost surely, 2^1620236234 is an apocalyptic number.

1620236234 is a deficient number, since it is larger than the sum of its proper divisors (811731094).

1620236234 is a wasteful number, since it uses less digits than its factorization.

1620236234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537660.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 1620236234 is about 40252.1581284780. The cubic root of 1620236234 is about 1174.5173775292.

Adding to 1620236234 its reverse (4326320261), we get a palindrome (5946556495).

The spelling of 1620236234 in words is "one billion, six hundred twenty million, two hundred thirty-six thousand, two hundred thirty-four".