19099240000 has 105 divisors (see below), whose sum is σ = 47428545351. Its totient is φ = 7628640000.

The previous prime is 19099239979. The next prime is 19099240009. The reversal of 19099240000 is 4299091.

The square root of 19099240000 is 138200.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 1497380416 + 17601859584 = 38696^2 + 132672^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19099240009) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 27639655 + ... + 27640345.

Almost surely, 2^19099240000 is an apocalyptic number.

19099240000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19099240000 is the 138200-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19099240000

19099240000 is an abundant number, since it is smaller than the sum of its proper divisors (28329305351).

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

19099240000 is an frugal number, since it uses more digits than its factorization.

19099240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The spelling of 19099240000 in words is "nineteen billion, ninety-nine million, two hundred forty thousand".