1378119870 has 24 divisors (see below), whose sum is σ = 3583111896. Its totient is φ = 367498608.

The previous prime is 1378119829. The next prime is 1378119881. The reversal of 1378119870 is 789118731.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7656132 + ... + 7656311.

It is an arithmetic number, because the mean of its divisors is an integer number (149296329).

Almost surely, 2^1378119870 is an apocalyptic number.

1378119870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1378119870 is an abundant number, since it is smaller than the sum of its proper divisors (2204992026).

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

1378119870 is a wasteful number, since it uses less digits than its factorization.

1378119870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15312456 (or 15312453 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 45.

The square root of 1378119870 is about 37123.0369177954. The cubic root of 1378119870 is about 1112.8304437741.

The spelling of 1378119870 in words is "one billion, three hundred seventy-eight million, one hundred nineteen thousand, eight hundred seventy".