1378740164 has 12 divisors (see below), whose sum is σ = 2413060524. Its totient is φ = 689294304.

The previous prime is 1378740163. The next prime is 1378740191. The reversal of 1378740164 is 4610478731.

It can be written as a sum of positive squares in 2 ways, for example, as 921122500 + 457617664 = 30350^2 + 21392^2 .

It is not an unprimeable number, because it can be changed into a prime (1378740163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49334 + ... + 72050.

It is an arithmetic number, because the mean of its divisors is an integer number (201088377).

Almost surely, 2^1378740164 is an apocalyptic number.

It is an amenable number.

1378740164 is a deficient number, since it is larger than the sum of its proper divisors (1034320360).

1378740164 is a wasteful number, since it uses less digits than its factorization.

1378740164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37894 (or 37892 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 1378740164 is about 37131.3905476216. The cubic root of 1378740164 is about 1112.9973809960.

The spelling of 1378740164 in words is "one billion, three hundred seventy-eight million, seven hundred forty thousand, one hundred sixty-four".