1378046670 has 256 divisors, whose sum is σ = 4491970560. Its totient is φ = 261273600.

The previous prime is 1378046617. The next prime is 1378046701. The reversal of 1378046670 is 766408731.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 127 ways as a sum of consecutive naturals, for example, 3273060 + ... + 3273480.

It is an arithmetic number, because the mean of its divisors is an integer number (17546760).

Almost surely, 2^1378046670 is an apocalyptic number.

1378046670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378046670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2245985280).

1378046670 is an abundant number, since it is smaller than the sum of its proper divisors (3113923890).

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

1378046670 is a wasteful number, since it uses less digits than its factorization.

1378046670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 1378046670 is about 37122.0509939847. The cubic root of 1378046670 is about 1112.8107404492.

The spelling of 1378046670 in words is "one billion, three hundred seventy-eight million, forty-six thousand, six hundred seventy".