19149642 has 32 divisors (see below), whose sum is σ = 43364160. Its totient is φ = 6261840.

The previous prime is 19149607. The next prime is 19149649. The reversal of 19149642 is 24694191.

It is a happy number.

19149642 is a `hidden beast` number, since 1 + 9 + 1 + 4 + 9 + 642 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 19149597 and 19149606.

It is not an unprimeable number, because it can be changed into a prime (19149649) 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, 484 + ... + 6207.

It is an arithmetic number, because the mean of its divisors is an integer number (1355130).

Almost surely, 2^19149642 is an apocalyptic number.

19149642 is an abundant number, since it is smaller than the sum of its proper divisors (24214518).

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

19149642 is a wasteful number, since it uses less digits than its factorization.

19149642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6755 (or 6749 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19149642 is about 4376.0303929475. The cubic root of 19149642 is about 267.5388687806.

It can be divided in two parts, 19149 and 642, that added together give a palindrome (19791).

The spelling of 19149642 in words is "nineteen million, one hundred forty-nine thousand, six hundred forty-two".