19113081 has 16 divisors (see below), whose sum is σ = 28331520. Its totient is φ = 11381760.

The previous prime is 19113071. The next prime is 19113091. The reversal of 19113081 is 18031191.

It is an interprime number because it is at equal distance from previous prime (19113071) and next prime (19113091).

It is not a de Polignac number, because 19113081 - 2¹⁴ = 19096697 is a prime.

It is a super-2 number, since 2×19113081² = 730619730625122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19113071) 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, 6696 + ... + 9113.

It is an arithmetic number, because the mean of its divisors is an integer number (1770720).

Almost surely, 2^19113081 is an apocalyptic number.

It is an amenable number.

19113081 is a deficient number, since it is larger than the sum of its proper divisors (9218439).

19113081 is a wasteful number, since it uses less digits than its factorization.

19113081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15856.

The product of its (nonzero) digits is 216, while the sum is 24.

The square root of 19113081 is about 4371.8509809919. The cubic root of 19113081 is about 267.3684962271.

The spelling of 19113081 in words is "nineteen million, one hundred thirteen thousand, eighty-one".