1901601606042 has 48 divisors (see below), whose sum is σ = 4125357757248. Its totient is φ = 633064481280.

The previous prime is 1901601606019. The next prime is 1901601606049. The reversal of 1901601606042 is 2406061061091.

1901601606042 is a `hidden beast` number, since 1 + 9 + 0 + 1 + 6 + 0 + 1 + 606 + 0 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1901601605988 and 1901601606006.

It is not an unprimeable number, because it can be changed into a prime (1901601606049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49539117 + ... + 49577487.

It is an arithmetic number, because the mean of its divisors is an integer number (85944953276).

Almost surely, 2^{1901601606042} is an apocalyptic number.

1901601606042 is an abundant number, since it is smaller than the sum of its proper divisors (2223756151206).

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

1901601606042 is a wasteful number, since it uses less digits than its factorization.

1901601606042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41795 (or 41792 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The spelling of 1901601606042 in words is "one trillion, nine hundred one billion, six hundred one million, six hundred six thousand, forty-two".