1219797504 has 120 divisors (see below), whose sum is σ = 3558014460. Its totient is φ = 402259968.

The previous prime is 1219797497. The next prime is 1219797521. The reversal of 1219797504 is 4057979121.

It can be written as a sum of positive squares in 2 ways, for example, as 1132187904 + 87609600 = 33648^2 + 9360^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1219797504.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445612 + ... + 448340.

Almost surely, 2^1219797504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1219797504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1779007230).

1219797504 is an abundant number, since it is smaller than the sum of its proper divisors (2338216956).

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

1219797504 is an equidigital number, since it uses as much as digits as its factorization.

1219797504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2850 (or 2831 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 1219797504 is about 34925.5995510456. The cubic root of 1219797504 is about 1068.4706085728.

The spelling of 1219797504 in words is "one billion, two hundred nineteen million, seven hundred ninety-seven thousand, five hundred four".