1229819144 has 16 divisors (see below), whose sum is σ = 2315482620. Its totient is φ = 612357120.

The previous prime is 1229819119. The next prime is 1229819179. The reversal of 1229819144 is 4419189221.

It can be written as a sum of positive squares in 2 ways, for example, as 1047299044 + 182520100 = 32362^2 + 13510^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317009 + ... + 320864.

Almost surely, 2^1229819144 is an apocalyptic number.

It is an amenable number.

1229819144 is a deficient number, since it is larger than the sum of its proper divisors (1085663476).

1229819144 is a wasteful number, since it uses less digits than its factorization.

1229819144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638120 (or 638116 counting only the distinct ones).

The product of its digits is 41472, while the sum is 41.

The square root of 1229819144 is about 35068.7773382535. Note that the first 3 decimals coincide. The cubic root of 1229819144 is about 1071.3887531378.

The spelling of 1229819144 in words is "one billion, two hundred twenty-nine million, eight hundred nineteen thousand, one hundred forty-four".