2897783890 has 8 divisors (see below), whose sum is σ = 5216011020. Its totient is φ = 1159113552.

The previous prime is 2897783881. The next prime is 2897783891. The reversal of 2897783890 is 983877982.

It can be written as a sum of positive squares in 2 ways, for example, as 2495901681 + 401882209 = 49959^2 + 20047^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2897783891) 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, 144889185 + ... + 144889204.

Almost surely, 2^2897783890 is an apocalyptic number.

2897783890 is a deficient number, since it is larger than the sum of its proper divisors (2318227130).

2897783890 is a wasteful number, since it uses less digits than its factorization.

2897783890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289778396.

The product of its (nonzero) digits is 12192768, while the sum is 61.

The square root of 2897783890 is about 53831.0680741150. The cubic root of 2897783890 is about 1425.6798053239.

The spelling of 2897783890 in words is "two billion, eight hundred ninety-seven million, seven hundred eighty-three thousand, eight hundred ninety".