1019541099 has 4 divisors (see below), whose sum is σ = 1359388136. Its totient is φ = 679694064.

The previous prime is 1019541097. The next prime is 1019541143. The reversal of 1019541099 is 9901459101.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1019541099 - 2¹ = 1019541097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1019541091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169923514 + ... + 169923519.

It is an arithmetic number, because the mean of its divisors is an integer number (339847034).

Almost surely, 2^1019541099 is an apocalyptic number.

1019541099 is a deficient number, since it is larger than the sum of its proper divisors (339847037).

1019541099 is an equidigital number, since it uses as much as digits as its factorization.

1019541099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339847036.

The product of its (nonzero) digits is 14580, while the sum is 39.

The square root of 1019541099 is about 31930.2536632580. The cubic root of 1019541099 is about 1006.4717260760.

The spelling of 1019541099 in words is "one billion, nineteen million, five hundred forty-one thousand, ninety-nine".