19149484530 has 32 divisors (see below), whose sum is σ = 50136833088. Its totient is φ = 4642299200.

The previous prime is 19149484489. The next prime is 19149484531. The reversal of 19149484530 is 3548494191.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19149484530.

It is not an unprimeable number, because it can be changed into a prime (19149484531) 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, 29014041 + ... + 29014700.

It is an arithmetic number, because the mean of its divisors is an integer number (1566776034).

Almost surely, 2^19149484530 is an apocalyptic number.

19149484530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19149484530 is an abundant number, since it is smaller than the sum of its proper divisors (30987348558).

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

19149484530 is a wasteful number, since it uses less digits than its factorization.

19149484530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58028762.

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 19149484530 in words is "nineteen billion, one hundred forty-nine million, four hundred eighty-four thousand, five hundred thirty".