1219736670944 has 96 divisors (see below), whose sum is σ = 2705046865920. Its totient is φ = 536366476800.

The previous prime is 1219736670931. The next prime is 1219736670949. The reversal of 1219736670944 is 4490766379121.

It is a happy number.

It is a super-2 number, since 2×1219736670944² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1219736670949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36964277 + ... + 36997259.

It is an arithmetic number, because the mean of its divisors is an integer number (28177571520).

Almost surely, 2^{1219736670944} 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 1219736670944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1352523432960).

1219736670944 is an abundant number, since it is smaller than the sum of its proper divisors (1485310194976).

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

1219736670944 is a wasteful number, since it uses less digits than its factorization.

1219736670944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36424 (or 36416 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 59.

The spelling of 1219736670944 in words is "one trillion, two hundred nineteen billion, seven hundred thirty-six million, six hundred seventy thousand, nine hundred forty-four".