19192138 has 32 divisors (see below), whose sum is σ = 33886080. Its totient is φ = 7983360.

The previous prime is 19192111. The next prime is 19192153. The reversal of 19192138 is 83129191.

It is a super-2 number, since 2×19192138² = 736676322022088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90853 + ... + 91063.

It is an arithmetic number, because the mean of its divisors is an integer number (1058940).

Almost surely, 2^19192138 is an apocalyptic number.

19192138 is a deficient number, since it is larger than the sum of its proper divisors (14693942).

19192138 is a wasteful number, since it uses less digits than its factorization.

19192138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382.

The product of its digits is 3888, while the sum is 34.

The square root of 19192138 is about 4380.8832442785. The cubic root of 19192138 is about 267.7366258635.

It can be divided in two parts, 191 and 92138, that added together give a palindrome (92329).

The spelling of 19192138 in words is "nineteen million, one hundred ninety-two thousand, one hundred thirty-eight".