1378842654 has 48 divisors (see below), whose sum is σ = 3376771200. Its totient is φ = 373219056.

The previous prime is 1378842653. The next prime is 1378842659. The reversal of 1378842654 is 4562488731.

1378842654 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378842653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 117834 + ... + 129005.

It is an arithmetic number, because the mean of its divisors is an integer number (70349400).

Almost surely, 2^1378842654 is an apocalyptic number.

1378842654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1378842654 is an abundant number, since it is smaller than the sum of its proper divisors (1997928546).

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

1378842654 is a wasteful number, since it uses less digits than its factorization.

1378842654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246877 (or 246870 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 1378842654 is about 37132.7706211104. The cubic root of 1378842654 is about 1113.0249588960.

The spelling of 1378842654 in words is "one billion, three hundred seventy-eight million, eight hundred forty-two thousand, six hundred fifty-four".