190861141 has 4 divisors (see below), whose sum is σ = 197017984. Its totient is φ = 184704300.

The previous prime is 190861117. The next prime is 190861147. The reversal of 190861141 is 141168091.

190861141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 141168091 = 61 ⋅2314231.

It is a cyclic number.

It is not a de Polignac number, because 190861141 - 2¹⁵ = 190828373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 6156811 = 190861141 / (1 + 9 + 0 + 8 + 6 + 1 + 1 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190861147) 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, 3078375 + ... + 3078436.

It is an arithmetic number, because the mean of its divisors is an integer number (49254496).

Almost surely, 2^190861141 is an apocalyptic number.

It is an amenable number.

190861141 is a deficient number, since it is larger than the sum of its proper divisors (6156843).

190861141 is an equidigital number, since it uses as much as digits as its factorization.

190861141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6156842.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 190861141 is about 13815.2503053691. The cubic root of 190861141 is about 575.7569272809.

The spelling of 190861141 in words is "one hundred ninety million, eight hundred sixty-one thousand, one hundred forty-one".