19540093 has 8 divisors (see below), whose sum is σ = 20072448. Its totient is φ = 19013904.

The previous prime is 19540061. The next prime is 19540121. The reversal of 19540093 is 39004591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19540093 - 2⁵ = 19540061 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 (19540043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5280 + ... + 8182.

It is an arithmetic number, because the mean of its divisors is an integer number (2509056).

Almost surely, 2^19540093 is an apocalyptic number.

It is an amenable number.

19540093 is a deficient number, since it is larger than the sum of its proper divisors (532355).

19540093 is a wasteful number, since it uses less digits than its factorization.

19540093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 19540093 is about 4420.4177404404. The cubic root of 19540093 is about 269.3449736756.

The spelling of 19540093 in words is "nineteen million, five hundred forty thousand, ninety-three".