188540785442 has 8 divisors (see below), whose sum is σ = 295107316416. Its totient is φ = 90171679972.

The previous prime is 188540785439. The next prime is 188540785457. The reversal of 188540785442 is 244587045881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2049356318 + ... + 2049356409.

It is an arithmetic number, because the mean of its divisors is an integer number (36888414552).

Almost surely, 2^188540785442 is an apocalyptic number.

188540785442 is a deficient number, since it is larger than the sum of its proper divisors (106566530974).

188540785442 is a wasteful number, since it uses less digits than its factorization.

188540785442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098712752.

The product of its (nonzero) digits is 11468800, while the sum is 56.

The spelling of 188540785442 in words is "one hundred eighty-eight billion, five hundred forty million, seven hundred eighty-five thousand, four hundred forty-two".