1642989590632 has 64 divisors (see below), whose sum is σ = 3392796052800. Its totient is φ = 741282347520.

The previous prime is 1642989590617. The next prime is 1642989590639. The reversal of 1642989590632 is 2360959892461.

It is not an unprimeable number, because it can be changed into a prime (1642989590639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12844 + ... + 1812772.

It is an arithmetic number, because the mean of its divisors is an integer number (53012438325).

Almost surely, 2^{1642989590632} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642989590632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1696398026400).

1642989590632 is an abundant number, since it is smaller than the sum of its proper divisors (1749806462168).

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

1642989590632 is a wasteful number, since it uses less digits than its factorization.

1642989590632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800146 (or 1800142 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 64.

The spelling of 1642989590632 in words is "one trillion, six hundred forty-two billion, nine hundred eighty-nine million, five hundred ninety thousand, six hundred thirty-two".