1642101828 has 24 divisors (see below), whose sum is σ = 4033233120. Its totient is φ = 518558400.

The previous prime is 1642101827. The next prime is 1642101833. The reversal of 1642101828 is 8281012461.

It is not an unprimeable number, because it can be changed into a prime (1642101827) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3600873 + ... + 3601328.

It is an arithmetic number, because the mean of its divisors is an integer number (168051380).

Almost surely, 2^1642101828 is an apocalyptic number.

It is an amenable number.

1642101828 is an abundant number, since it is smaller than the sum of its proper divisors (2391131292).

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

1642101828 is a wasteful number, since it uses less digits than its factorization.

1642101828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7202227 (or 7202225 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1642101828 is about 40522.8556249433. The cubic root of 1642101828 is about 1179.7772796159. Note that the first 3 decimals are identical.

The spelling of 1642101828 in words is "one billion, six hundred forty-two million, one hundred one thousand, eight hundred twenty-eight".