19941151 has 4 divisors (see below), whose sum is σ = 19961704. Its totient is φ = 19920600.

The previous prime is 19941149. The next prime is 19941179. The reversal of 19941151 is 15114991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19941151 - 2¹ = 19941149 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 (19941751) 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, 8745 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (4990426).

Almost surely, 2^19941151 is an apocalyptic number.

19941151 is a deficient number, since it is larger than the sum of its proper divisors (20553).

19941151 is a wasteful number, since it uses less digits than its factorization.

19941151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552.

The product of its digits is 1620, while the sum is 31.

The square root of 19941151 is about 4465.5515896695. The cubic root of 19941151 is about 271.1752655006.

The spelling of 19941151 in words is "nineteen million, nine hundred forty-one thousand, one hundred fifty-one".