2089689478 has 32 divisors (see below), whose sum is σ = 3335512320. Its totient is φ = 980138880.

The previous prime is 2089689431. The next prime is 2089689479. The reversal of 2089689478 is 8749869802.

It is a super-2 number, since 2×2089689478² = 8733604228927824968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2089689479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 670588 + ... + 673696.

It is an arithmetic number, because the mean of its divisors is an integer number (104234760).

Almost surely, 2^2089689478 is an apocalyptic number.

2089689478 is a deficient number, since it is larger than the sum of its proper divisors (1245822842).

2089689478 is a wasteful number, since it uses less digits than its factorization.

2089689478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3472.

The product of its (nonzero) digits is 13934592, while the sum is 61.

The square root of 2089689478 is about 45713.1215079434. The cubic root of 2089689478 is about 1278.4799415882.

The spelling of 2089689478 in words is "two billion, eighty-nine million, six hundred eighty-nine thousand, four hundred seventy-eight".