190985939078 has 16 divisors (see below), whose sum is σ = 313527352320. Its totient is φ = 86532649800.

The previous prime is 190985938973. The next prime is 190985939099. The reversal of 190985939078 is 870939589091.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 190985938999 and 190985939017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13950038 + ... + 13963721.

It is an arithmetic number, because the mean of its divisors is an integer number (19595459520).

Almost surely, 2^190985939078 is an apocalyptic number.

190985939078 is a deficient number, since it is larger than the sum of its proper divisors (122541413242).

190985939078 is a wasteful number, since it uses less digits than its factorization.

190985939078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27914083.

The product of its (nonzero) digits is 44089920, while the sum is 68.

The spelling of 190985939078 in words is "one hundred ninety billion, nine hundred eighty-five million, nine hundred thirty-nine thousand, seventy-eight".