1642243152 has 80 divisors (see below), whose sum is σ = 4686842880. Its totient is φ = 491337600.

The previous prime is 1642243147. The next prime is 1642243189. The reversal of 1642243152 is 2513422461.

It is a congruent number.

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, 22027 + ... + 61397.

It is an arithmetic number, because the mean of its divisors is an integer number (58585536).

Almost surely, 2^1642243152 is an apocalyptic number.

1642243152 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 1642243152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343421440).

1642243152 is an abundant number, since it is smaller than the sum of its proper divisors (3044599728).

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

1642243152 is a wasteful number, since it uses less digits than its factorization.

1642243152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39472 (or 39466 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 1642243152 is about 40524.5993441021. The cubic root of 1642243152 is about 1179.8111236522.

The spelling of 1642243152 in words is "one billion, six hundred forty-two million, two hundred forty-three thousand, one hundred fifty-two".