190893491378 has 32 divisors (see below), whose sum is σ = 308123403840. Its totient is φ = 88426589760.

The previous prime is 190893491377. The next prime is 190893491407. The reversal of 190893491378 is 873194398091.

It is a self number, because there is not a number n which added to its sum of digits gives 190893491378.

It is not an unprimeable number, because it can be changed into a prime (190893491377) 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, 163001 + ... + 639027.

It is an arithmetic number, because the mean of its divisors is an integer number (9628856370).

Almost surely, 2^190893491378 is an apocalyptic number.

190893491378 is a deficient number, since it is larger than the sum of its proper divisors (117229912462).

190893491378 is a wasteful number, since it uses less digits than its factorization.

190893491378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476282.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 190893491378 in words is "one hundred ninety billion, eight hundred ninety-three million, four hundred ninety-one thousand, three hundred seventy-eight".