219081941 has 12 divisors (see below), whose sum is σ = 250633572. Its totient is φ = 190330368.

The previous prime is 219081883. The next prime is 219081953. The reversal of 219081941 is 149180912.

It can be written as a sum of positive squares in 6 ways, for example, as 9672100 + 209409841 = 3110^2 + 14471^2 .

It is not a de Polignac number, because 219081941 - 2¹⁴ = 219065557 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 (219081041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25400 + ... + 32913.

It is an arithmetic number, because the mean of its divisors is an integer number (20886131).

Almost surely, 2^219081941 is an apocalyptic number.

It is an amenable number.

219081941 is a deficient number, since it is larger than the sum of its proper divisors (31551631).

219081941 is a wasteful number, since it uses less digits than its factorization.

219081941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58360 (or 58343 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 219081941 is about 14801.4168578552. The cubic root of 219081941 is about 602.8401834570.

It can be divided in two parts, 219081 and 941, that added together give a palindrome (220022).

The spelling of 219081941 in words is "two hundred nineteen million, eighty-one thousand, nine hundred forty-one".