1378045344 has 48 divisors (see below), whose sum is σ = 3895631712. Its totient is φ = 424013568.

The previous prime is 1378045321. The next prime is 1378045369. The reversal of 1378045344 is 4435408731.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550854 + ... + 553349.

It is an arithmetic number, because the mean of its divisors is an integer number (81158994).

Almost surely, 2^1378045344 is an apocalyptic number.

It is an amenable number.

1378045344 is an abundant number, since it is smaller than the sum of its proper divisors (2517586368).

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

1378045344 is a wasteful number, since it uses less digits than its factorization.

1378045344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104229 (or 1104221 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 1378045344 is about 37122.0331339758. The cubic root of 1378045344 is about 1112.8103835219.

The spelling of 1378045344 in words is "one billion, three hundred seventy-eight million, forty-five thousand, three hundred forty-four".