190543881 has 16 divisors (see below), whose sum is σ = 279702720. Its totient is φ = 114419520.

The previous prime is 190543867. The next prime is 190543883. The reversal of 190543881 is 188345091.

190543881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190543881 - 2⁶ = 190543817 is a prime.

It is a super-2 number, since 2×190543881² = 72613941173084322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (190543883) 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, 22890 + ... + 30083.

It is an arithmetic number, because the mean of its divisors is an integer number (17481420).

Almost surely, 2^190543881 is an apocalyptic number.

190543881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

190543881 is a deficient number, since it is larger than the sum of its proper divisors (89158839).

190543881 is a wasteful number, since it uses less digits than its factorization.

190543881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53096.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 190543881 is about 13803.7632912188. The cubic root of 190543881 is about 575.4377319623.

The spelling of 190543881 in words is "one hundred ninety million, five hundred forty-three thousand, eight hundred eighty-one".