19149946 has 8 divisors (see below), whose sum is σ = 28744020. Its totient is φ = 9568608.

The previous prime is 19149943. The next prime is 19149953. The reversal of 19149946 is 64994191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19053225 + 96721 = 4365^2 + 311^2 .

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

It is not an unprimeable number, because it can be changed into a prime (19149943) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2910 + ... + 6838.

Almost surely, 2^19149946 is an apocalyptic number.

19149946 is a deficient number, since it is larger than the sum of its proper divisors (9594074).

19149946 is a wasteful number, since it uses less digits than its factorization.

19149946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368.

The product of its digits is 69984, while the sum is 43.

The square root of 19149946 is about 4376.0651274861. The cubic root of 19149946 is about 267.5402844970.

The spelling of 19149946 in words is "nineteen million, one hundred forty-nine thousand, nine hundred forty-six".