1915164 has 60 divisors (see below), whose sum is σ = 5244624. Its totient is φ = 608256.

The previous prime is 1915163. The next prime is 1915183. The reversal of 1915164 is 4615191.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7324 + ... + 7580.

2^1915164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1915164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2622312).

1915164 is an abundant number, since it is smaller than the sum of its proper divisors (3329460).

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

1915164 is a wasteful number, since it uses less digits than its factorization.

1915164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 285 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 1915164 is about 1383.8945046498. The cubic root of 1915164 is about 124.1848612788.

Adding to 1915164 its sum of digits (27), we get a palindrome (1915191).

The spelling of 1915164 in words is "one million, nine hundred fifteen thousand, one hundred sixty-four".