1219125946 has 16 divisors (see below), whose sum is σ = 1857081600. Its totient is φ = 600142608.

The previous prime is 1219125893. The next prime is 1219125979. The reversal of 1219125946 is 6495219121.

It is a junction number, because it is equal to n+sod(n) for n = 1219125899 and 1219125908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45976 + ... + 67468.

It is an arithmetic number, because the mean of its divisors is an integer number (116067600).

Almost surely, 2^1219125946 is an apocalyptic number.

1219125946 is a deficient number, since it is larger than the sum of its proper divisors (637955654).

1219125946 is a wasteful number, since it uses less digits than its factorization.

1219125946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21933.

The product of its digits is 38880, while the sum is 40.

The square root of 1219125946 is about 34915.9841047048. The cubic root of 1219125946 is about 1068.2744908556.

The spelling of 1219125946 in words is "one billion, two hundred nineteen million, one hundred twenty-five thousand, nine hundred forty-six".