2198195451 has 12 divisors (see below), whose sum is σ = 3227224000. Its totient is φ = 1441439280.

The previous prime is 2198195423. The next prime is 2198195459. The reversal of 2198195451 is 1545918912.

2198195451 is a `hidden beast` number, since 2 + 1 + 9 + 8 + 195 + 451 = 666.

2198195451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2198195451 - 2¹⁸ = 2197933307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2198195397 and 2198195406.

It is not an unprimeable number, because it can be changed into a prime (2198195459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2001451 + ... + 2002548.

Almost surely, 2^2198195451 is an apocalyptic number.

2198195451 is a deficient number, since it is larger than the sum of its proper divisors (1029028549).

2198195451 is a wasteful number, since it uses less digits than its factorization.

2198195451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4004066 (or 4004063 counting only the distinct ones).

The product of its digits is 129600, while the sum is 45.

The square root of 2198195451 is about 46884.9170949464. The cubic root of 2198195451 is about 1300.2357463982.

The spelling of 2198195451 in words is "two billion, one hundred ninety-eight million, one hundred ninety-five thousand, four hundred fifty-one".