19191141 has 16 divisors (see below), whose sum is σ = 28969920. Its totient is φ = 12551760.

The previous prime is 19191119. The next prime is 19191217. The reversal of 19191141 is 14119191.

It is not a de Polignac number, because 19191141 - 2⁹ = 19190629 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19191241) 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, 5275 + ... + 8136.

It is an arithmetic number, because the mean of its divisors is an integer number (1810620).

Almost surely, 2^19191141 is an apocalyptic number.

It is an amenable number.

19191141 is a deficient number, since it is larger than the sum of its proper divisors (9778779).

19191141 is a wasteful number, since it uses less digits than its factorization.

19191141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13473 (or 13467 counting only the distinct ones).

The product of its digits is 324, while the sum is 27.

The square root of 19191141 is about 4380.7694529614. The cubic root of 19191141 is about 267.7319896241.

The spelling of 19191141 in words is "nineteen million, one hundred ninety-one thousand, one hundred forty-one".