1378911753 has 12 divisors (see below), whose sum is σ = 1992207360. Its totient is φ = 919068696.

The previous prime is 1378911739. The next prime is 1378911761. The reversal of 1378911753 is 3571198731.

It is not a de Polignac number, because 1378911753 - 2⁹ = 1378911241 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1378911699 and 1378911708.

It is not an unprimeable number, because it can be changed into a prime (1378911773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33000 + ... + 62022.

It is an arithmetic number, because the mean of its divisors is an integer number (166017280).

Almost surely, 2^1378911753 is an apocalyptic number.

It is an amenable number.

1378911753 is a deficient number, since it is larger than the sum of its proper divisors (613295607).

1378911753 is a wasteful number, since it uses less digits than its factorization.

1378911753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34308 (or 34305 counting only the distinct ones).

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

The square root of 1378911753 is about 37133.7010409682. The cubic root of 1378911753 is about 1113.0435512101.

The spelling of 1378911753 in words is "one billion, three hundred seventy-eight million, nine hundred eleven thousand, seven hundred fifty-three".