1254664198 has 8 divisors (see below), whose sum is σ = 1882426320. Its totient is φ = 627188760.

The previous prime is 1254664193. The next prime is 1254664211. The reversal of 1254664198 is 8914664521.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254664193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60373 + ... + 78448.

It is an arithmetic number, because the mean of its divisors is an integer number (235303290).

Almost surely, 2^1254664198 is an apocalyptic number.

1254664198 is a deficient number, since it is larger than the sum of its proper divisors (627762122).

1254664198 is a wasteful number, since it uses less digits than its factorization.

1254664198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143342.

The product of its digits is 414720, while the sum is 46.

The square root of 1254664198 is about 35421.2393628456. The cubic root of 1254664198 is about 1078.5555099987. Note that the first 4 decimals are identical.

The spelling of 1254664198 in words is "one billion, two hundred fifty-four million, six hundred sixty-four thousand, one hundred ninety-eight".