19049530 has 16 divisors (see below), whose sum is σ = 34339464. Its totient is φ = 7608640.

The previous prime is 19049489. The next prime is 19049587. The reversal of 19049530 is 3594091.

It can be written as a sum of positive squares in 4 ways, for example, as 18601969 + 447561 = 4313^2 + 669^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19049492 and 19049501.

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 7 ways as a sum of consecutive naturals, for example, 11004 + ... + 12616.

Almost surely, 2^19049530 is an apocalyptic number.

19049530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19049530 is a deficient number, since it is larger than the sum of its proper divisors (15289934).

19049530 is a wasteful number, since it uses less digits than its factorization.

19049530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2801.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 19049530 is about 4364.5767263275. The cubic root of 19049530 is about 267.0718337397.

The spelling of 19049530 in words is "nineteen million, forty-nine thousand, five hundred thirty".