19070689 has 9 divisors (see below), whose sum is σ = 21014931. Its totient is φ = 17293320.

The previous prime is 19070677. The next prime is 19070693. The reversal of 19070689 is 98607091.

The square root of 19070689 is 4367.

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., 12780625 + 6290064 = 3575^2 + 2508^2 .

It is not a de Polignac number, because 19070689 - 2⁷ = 19070561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19070609) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47839 + ... + 48235.

Almost surely, 2^19070689 is an apocalyptic number.

19070689 is the 4367-th square number.

19070689 is the 2184-th centered octagonal number.

It is an amenable number.

19070689 is a deficient number, since it is larger than the sum of its proper divisors (1944242).

19070689 is an frugal number, since it uses more digits than its factorization.

19070689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The cubic root of 19070689 is about 267.1706792575.

The spelling of 19070689 in words is "nineteen million, seventy thousand, six hundred eighty-nine".