1621226230 has 16 divisors (see below), whose sum is σ = 3142684944. Its totient is φ = 598606560.

The previous prime is 1621226227. The next prime is 1621226261. The reversal of 1621226230 is 326221261.

It is a junction number, because it is equal to n+sod(n) for n = 1621226195 and 1621226204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6235356 + ... + 6235615.

It is an arithmetic number, because the mean of its divisors is an integer number (196417809).

Almost surely, 2^1621226230 is an apocalyptic number.

1621226230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1621226230 is a deficient number, since it is larger than the sum of its proper divisors (1521458714).

1621226230 is a wasteful number, since it uses less digits than its factorization.

1621226230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12470991.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1621226230 is about 40264.4536781514. The cubic root of 1621226230 is about 1174.7565465131.

Adding to 1621226230 its reverse (326221261), we get a palindrome (1947447491).

The spelling of 1621226230 in words is "one billion, six hundred twenty-one million, two hundred twenty-six thousand, two hundred thirty".