1219797968 has 40 divisors (see below), whose sum is σ = 2447528616. Its totient is φ = 588556800.

The previous prime is 1219797961. The next prime is 1219797973. The reversal of 1219797968 is 8697979121.

It can be written as a sum of positive squares in 4 ways, for example, as 9314704 + 1210483264 = 3052^2 + 34792^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219797961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39938 + ... + 63518.

Almost surely, 2^1219797968 is an apocalyptic number.

It is an amenable number.

1219797968 is an abundant number, since it is smaller than the sum of its proper divisors (1227730648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1219797968 is a wasteful number, since it uses less digits than its factorization.

1219797968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23703 (or 23697 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 59.

The square root of 1219797968 is about 34925.6061937370. The cubic root of 1219797968 is about 1068.4707440516.

The spelling of 1219797968 in words is "one billion, two hundred nineteen million, seven hundred ninety-seven thousand, nine hundred sixty-eight".