1378164 has 12 divisors (see below), whose sum is σ = 3215744. Its totient is φ = 459384.

The previous prime is 1378163. The next prime is 1378187. The reversal of 1378164 is 4618731.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1378163) 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, 57412 + ... + 57435.

2^1378164 is an apocalyptic number.

It is an amenable number.

1378164 is an abundant number, since it is smaller than the sum of its proper divisors (1837580).

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

1378164 is a wasteful number, since it uses less digits than its factorization.

1378164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114854 (or 114852 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 1378164 is about 1173.9522988606. The cubic root of 1378164 is about 111.2842321958.

The spelling of 1378164 in words is "one million, three hundred seventy-eight thousand, one hundred sixty-four".