1621132234 has 16 divisors (see below), whose sum is σ = 2452151808. Its totient is φ = 803761632.

The previous prime is 1621132153. The next prime is 1621132237. The reversal of 1621132234 is 4322311261.

It is a super-2 number, since 2×1621132234² = 5256139440227661512, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1621132199 and 1621132208.

It is not an unprimeable number, because it can be changed into a prime (1621132237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295117 + ... + 300559.

It is an arithmetic number, because the mean of its divisors is an integer number (153259488).

Almost surely, 2^1621132234 is an apocalyptic number.

1621132234 is a deficient number, since it is larger than the sum of its proper divisors (831019574).

1621132234 is a wasteful number, since it uses less digits than its factorization.

1621132234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669.

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

The square root of 1621132234 is about 40263.2864282090. The cubic root of 1621132234 is about 1174.7338425975.

Adding to 1621132234 its reverse (4322311261), we get a palindrome (5943443495).

The spelling of 1621132234 in words is "one billion, six hundred twenty-one million, one hundred thirty-two thousand, two hundred thirty-four".