19069676649 has 27 divisors (see below), whose sum is σ = 27805431927. Its totient is φ = 12594081600.

The previous prime is 19069676621. The next prime is 19069676657. The reversal of 19069676649 is 94667696091.

The square root of 19069676649 is 138093.

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

It can be written as a sum of positive squares in only one way, i.e., 14341739049 + 4727937600 = 119757^2 + 68760^2 .

It is not a de Polignac number, because 19069676649 - 2¹⁵ = 19069643881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19069674649) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 79127169 + ... + 79127409.

Almost surely, 2^19069676649 is an apocalyptic number.

19069676649 is the 138093-rd square number.

19069676649 is the 69047-th centered octagonal number.

It is an amenable number.

19069676649 is a deficient number, since it is larger than the sum of its proper divisors (8735755278).

19069676649 is an frugal number, since it uses more digits than its factorization.

19069676649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 63.

The spelling of 19069676649 in words is "nineteen billion, sixty-nine million, six hundred seventy-six thousand, six hundred forty-nine".