190497394 has 8 divisors (see below), whose sum is σ = 287664300. Its totient is φ = 94609296.

The previous prime is 190497389. The next prime is 190497397. The reversal of 190497394 is 493794091.

190497394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 190081369 + 416025 = 13787^2 + 645^2 .

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

It is not an unprimeable number, because it can be changed into a prime (190497397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319329 + ... + 319924.

Almost surely, 2^190497394 is an apocalyptic number.

190497394 is a deficient number, since it is larger than the sum of its proper divisors (97166906).

190497394 is a wasteful number, since it uses less digits than its factorization.

190497394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639404.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 190497394 is about 13802.0793361001. The cubic root of 190497394 is about 575.3909316323.

The spelling of 190497394 in words is "one hundred ninety million, four hundred ninety-seven thousand, three hundred ninety-four".