19146138 has 32 divisors (see below), whose sum is σ = 42094080. Its totient is φ = 5757360.

The previous prime is 19146133. The next prime is 19146157. The reversal of 19146138 is 83164191.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 19146099 and 19146108.

It is not an unprimeable number, because it can be changed into a prime (19146133) 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, 8131 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (1315440).

Almost surely, 2^19146138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19146138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047040).

19146138 is an abundant number, since it is smaller than the sum of its proper divisors (22947942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19146138 is a wasteful number, since it uses less digits than its factorization.

19146138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2242.

The product of its digits is 5184, while the sum is 33.

The square root of 19146138 is about 4375.6300117812. The cubic root of 19146138 is about 267.5225497047.

The spelling of 19146138 in words is "nineteen million, one hundred forty-six thousand, one hundred thirty-eight".