2097863978 has 16 divisors (see below), whose sum is σ = 3624658944. Its totient is φ = 892004400.

The previous prime is 2097863959. The next prime is 2097863983. The reversal of 2097863978 is 8793687902.

It is a super-3 number, since 3×2097863978³ (a number of 29 digits) contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 588173 + ... + 591728.

It is an arithmetic number, because the mean of its divisors is an integer number (226541184).

Almost surely, 2^2097863978 is an apocalyptic number.

2097863978 is a deficient number, since it is larger than the sum of its proper divisors (1526794966).

2097863978 is a wasteful number, since it uses less digits than its factorization.

2097863978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180037.

The product of its (nonzero) digits is 9144576, while the sum is 59.

The square root of 2097863978 is about 45802.4451094044. The cubic root of 2097863978 is about 1280.1448359057.

The spelling of 2097863978 in words is "two billion, ninety-seven million, eight hundred sixty-three thousand, nine hundred seventy-eight".