1801431986628 has 48 divisors (see below), whose sum is σ = 4243560418944. Its totient is φ = 594757336320.

The previous prime is 1801431986623. The next prime is 1801431986663. The reversal of 1801431986628 is 8266891341081.

It is not an unprimeable number, because it can be changed into a prime (1801431986623) 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, 1036375 + ... + 2162622.

It is an arithmetic number, because the mean of its divisors is an integer number (88407508728).

Almost surely, 2^{1801431986628} is an apocalyptic number.

It is an amenable number.

1801431986628 is an abundant number, since it is smaller than the sum of its proper divisors (2442128432316).

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

1801431986628 is a wasteful number, since it uses less digits than its factorization.

1801431986628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199452 (or 3199450 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 1801431986628 in words is "one trillion, eight hundred one billion, four hundred thirty-one million, nine hundred eighty-six thousand, six hundred twenty-eight".