2101678297 has 4 divisors (see below), whose sum is σ = 2101832656. Its totient is φ = 2101523940.

The previous prime is 2101678283. The next prime is 2101678303. The reversal of 2101678297 is 7928761012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2101678297 - 2¹⁹ = 2101154009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101678237) 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, 54543 + ... + 84724.

It is an arithmetic number, because the mean of its divisors is an integer number (525458164).

Almost surely, 2^2101678297 is an apocalyptic number.

It is an amenable number.

2101678297 is a deficient number, since it is larger than the sum of its proper divisors (154359).

2101678297 is a wasteful number, since it uses less digits than its factorization.

2101678297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154358.

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 2101678297 is about 45844.0650139143. The cubic root of 2101678297 is about 1280.9202157634.

The spelling of 2101678297 in words is "two billion, one hundred one million, six hundred seventy-eight thousand, two hundred ninety-seven".