1219472198 has 16 divisors (see below), whose sum is σ = 2091432960. Its totient is φ = 522403656.

The previous prime is 1219472197. The next prime is 1219472207. The reversal of 1219472198 is 8912749121.

It is a happy number.

It is a super-2 number, since 2×1219472198² = 2974224883389902408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219472197) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16715 + ... + 52137.

It is an arithmetic number, because the mean of its divisors is an integer number (130714560).

Almost surely, 2^1219472198 is an apocalyptic number.

1219472198 is a deficient number, since it is larger than the sum of its proper divisors (871960762).

1219472198 is a wasteful number, since it uses less digits than its factorization.

1219472198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37891.

The product of its digits is 72576, while the sum is 44.

The square root of 1219472198 is about 34920.9421121481. The cubic root of 1219472198 is about 1068.3756171769.

The spelling of 1219472198 in words is "one billion, two hundred nineteen million, four hundred seventy-two thousand, one hundred ninety-eight".