190378493 has 8 divisors (see below), whose sum is σ = 191846880. Its totient is φ = 188914960.

The previous prime is 190378483. The next prime is 190378519. The reversal of 190378493 is 394873091.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 190378493 - 2¹⁶ = 190312957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190378403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120398 + ... + 121968.

It is an arithmetic number, because the mean of its divisors is an integer number (23980860).

Almost surely, 2^190378493 is an apocalyptic number.

It is an amenable number.

190378493 is a deficient number, since it is larger than the sum of its proper divisors (1468387).

190378493 is a wasteful number, since it uses less digits than its factorization.

190378493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 190378493 is about 13797.7713055406. The cubic root of 190378493 is about 575.2711945682.

The spelling of 190378493 in words is "one hundred ninety million, three hundred seventy-eight thousand, four hundred ninety-three".