2197854807 has 4 divisors (see below), whose sum is σ = 2930473080. Its totient is φ = 1465236536.

The previous prime is 2197854803. The next prime is 2197854847. The reversal of 2197854807 is 7084587912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2197854807 - 2² = 2197854803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2197854807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197854803) 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, 366309132 + ... + 366309137.

It is an arithmetic number, because the mean of its divisors is an integer number (732618270).

Almost surely, 2^2197854807 is an apocalyptic number.

2197854807 is a deficient number, since it is larger than the sum of its proper divisors (732618273).

2197854807 is an equidigital number, since it uses as much as digits as its factorization.

2197854807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732618272.

The product of its (nonzero) digits is 1128960, while the sum is 51.

The square root of 2197854807 is about 46881.2841867626. The cubic root of 2197854807 is about 1300.1685791245.

The spelling of 2197854807 in words is "two billion, one hundred ninety-seven million, eight hundred fifty-four thousand, eight hundred seven".