190381863 has 16 divisors (see below), whose sum is σ = 293780480. Its totient is φ = 107411616.

The previous prime is 190381859. The next prime is 190381871. The reversal of 190381863 is 368183091.

It is not a de Polignac number, because 190381863 - 2² = 190381859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190381063) 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, 55720 + ... + 59037.

It is an arithmetic number, because the mean of its divisors is an integer number (18361280).

Almost surely, 2^190381863 is an apocalyptic number.

190381863 is a deficient number, since it is larger than the sum of its proper divisors (103398617).

190381863 is a wasteful number, since it uses less digits than its factorization.

190381863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114846.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 190381863 is about 13797.8934261720. The cubic root of 190381863 is about 575.2745889511.

The spelling of 190381863 in words is "one hundred ninety million, three hundred eighty-one thousand, eight hundred sixty-three".