190494378 has 12 divisors (see below), whose sum is σ = 412737858. Its totient is φ = 63498120.

The previous prime is 190494377. The next prime is 190494397. The reversal of 190494378 is 873494091.

190494378 is a `hidden beast` number, since 1 + 90 + 494 + 3 + 78 = 666.

It can be written as a sum of positive squares in only one way, i.e., 180552969 + 9941409 = 13437^2 + 3153^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (190494371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5291493 + ... + 5291528.

Almost surely, 2^190494378 is an apocalyptic number.

190494378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

190494378 is an abundant number, since it is smaller than the sum of its proper divisors (222243480).

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

190494378 is a wasteful number, since it uses less digits than its factorization.

190494378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10583029 (or 10583026 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 190494378 is about 13801.9700767680. The cubic root of 190494378 is about 575.3878950409.

The spelling of 190494378 in words is "one hundred ninety million, four hundred ninety-four thousand, three hundred seventy-eight".