19142538 has 16 divisors (see below), whose sum is σ = 40300320. Its totient is φ = 6044976.

The previous prime is 19142521. The next prime is 19142549. The reversal of 19142538 is 83524191.

It is a super-2 number, since 2×19142538² = 732873522162888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19142499 and 19142508.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83845 + ... + 84072.

It is an arithmetic number, because the mean of its divisors is an integer number (2518770).

Almost surely, 2^19142538 is an apocalyptic number.

19142538 is an abundant number, since it is smaller than the sum of its proper divisors (21157782).

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

19142538 is a wasteful number, since it uses less digits than its factorization.

19142538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167941.

The product of its digits is 8640, while the sum is 33.

The square root of 19142538 is about 4375.2186231090. The cubic root of 19142538 is about 267.5057814571.

The spelling of 19142538 in words is "nineteen million, one hundred forty-two thousand, five hundred thirty-eight".