1642086432 has 240 divisors, whose sum is σ = 5634921600. Its totient is φ = 468913536.

The previous prime is 1642086431. The next prime is 1642086437. The reversal of 1642086432 is 2346802461.

1642086432 is a `hidden beast` number, since 1 + 6 + 4 + 2 + 0 + 8 + 643 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1642086431) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 888133 + ... + 889979.

It is an arithmetic number, because the mean of its divisors is an integer number (23478840).

Almost surely, 2^1642086432 is an apocalyptic number.

1642086432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642086432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2817460800).

1642086432 is an abundant number, since it is smaller than the sum of its proper divisors (3992835168).

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

1642086432 is an equidigital number, since it uses as much as digits as its factorization.

1642086432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890 (or 1859 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1642086432 is about 40522.6656576292. The cubic root of 1642086432 is about 1179.7735924902.

Adding to 1642086432 its reverse (2346802461), we get a palindrome (3988888893).

The spelling of 1642086432 in words is "one billion, six hundred forty-two million, eighty-six thousand, four hundred thirty-two".