1636424420 has 48 divisors (see below), whose sum is σ = 3642453360. Its totient is φ = 615419904.

The previous prime is 1636424411. The next prime is 1636424443. The reversal of 1636424420 is 244246361.

1636424420 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 177795556 + 1458628864 = 13334^2 + 38192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 432296 + ... + 436064.

It is an arithmetic number, because the mean of its divisors is an integer number (75884445).

Almost surely, 2^1636424420 is an apocalyptic number.

1636424420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1636424420 is an abundant number, since it is smaller than the sum of its proper divisors (2006028940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1636424420 is a wasteful number, since it uses less digits than its factorization.

1636424420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5072 (or 5070 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 1636424420 is about 40452.7430466711. The cubic root of 1636424420 is about 1178.4160544207.

The spelling of 1636424420 in words is "one billion, six hundred thirty-six million, four hundred twenty-four thousand, four hundred twenty".