1378217152 has 56 divisors (see below), whose sum is σ = 2949901136. Its totient is φ = 635102208.

The previous prime is 1378217089. The next prime is 1378217171. The reversal of 1378217152 is 2517128731.

It is a super-2 number, since 2×1378217152² = 3798965036133982208, which contains 22 as substring.

It is an unprimeable number.

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, 928603 + ... + 930085.

It is an arithmetic number, because the mean of its divisors is an integer number (52676806).

Almost surely, 2^1378217152 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 1378217152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1474950568).

1378217152 is an abundant number, since it is smaller than the sum of its proper divisors (1571683984).

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

1378217152 is a wasteful number, since it uses less digits than its factorization.

1378217152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2615 counting only the distinct ones).

The product of its digits is 23520, while the sum is 37.

The square root of 1378217152 is about 37124.3471592431. The cubic root of 1378217152 is about 1112.8566281979.

The spelling of 1378217152 in words is "one billion, three hundred seventy-eight million, two hundred seventeen thousand, one hundred fifty-two".