19097779570 has 8 divisors (see below), whose sum is σ = 34376003244. Its totient is φ = 7639111824.

The previous prime is 19097779537. The next prime is 19097779573. The reversal of 19097779570 is 7597779091.

It can be written as a sum of positive squares in 2 ways, for example, as 19093988761 + 3790809 = 138181^2 + 1947^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 19097779499 and 19097779508.

It is not an unprimeable number, because it can be changed into a prime (19097779573) 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, 954888969 + ... + 954888988.

Almost surely, 2^19097779570 is an apocalyptic number.

19097779570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19097779570 is a deficient number, since it is larger than the sum of its proper divisors (15278223674).

19097779570 is a wasteful number, since it uses less digits than its factorization.

19097779570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909777964.

The product of its (nonzero) digits is 8751645, while the sum is 61.

The spelling of 19097779570 in words is "nineteen billion, ninety-seven million, seven hundred seventy-nine thousand, five hundred seventy".