1621254382 has 32 divisors (see below), whose sum is σ = 2868094080. Its totient is φ = 679272480.

The previous prime is 1621254379. The next prime is 1621254391. The reversal of 1621254382 is 2834521261.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36948 + ... + 67879.

It is an arithmetic number, because the mean of its divisors is an integer number (89627940).

Almost surely, 2^1621254382 is an apocalyptic number.

1621254382 is a deficient number, since it is larger than the sum of its proper divisors (1246839698).

1621254382 is a wasteful number, since it uses less digits than its factorization.

1621254382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104896.

The product of its digits is 23040, while the sum is 34.

The square root of 1621254382 is about 40264.8032653830. The cubic root of 1621254382 is about 1174.7633462129.

The spelling of 1621254382 in words is "one billion, six hundred twenty-one million, two hundred fifty-four thousand, three hundred eighty-two".