1378353744 has 240 divisors, whose sum is σ = 4328722944. Its totient is φ = 407347200.

The previous prime is 1378353719. The next prime is 1378353749. The reversal of 1378353744 is 4473538731.

1378353744 is a `hidden beast` number, since 1 + 3 + 78 + 3 + 537 + 44 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1378353744.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378353749) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3111187 + ... + 3111629.

Almost surely, 2^1378353744 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 1378353744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2164361472).

1378353744 is an abundant number, since it is smaller than the sum of its proper divisors (2950369200).

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

1378353744 is a wasteful number, since it uses less digits than its factorization.

1378353744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 537 counting only the distinct ones).

The product of its digits is 846720, while the sum is 45.

The square root of 1378353744 is about 37126.1867689102. The cubic root of 1378353744 is about 1112.8933912220.

The spelling of 1378353744 in words is "one billion, three hundred seventy-eight million, three hundred fifty-three thousand, seven hundred forty-four".