1887164 has 6 divisors (see below), whose sum is σ = 3302544. Its totient is φ = 943580.

The previous prime is 1887161. The next prime is 1887167. The reversal of 1887164 is 4617881.

It is an interprime number because it is at equal distance from previous prime (1887161) and next prime (1887167).

It is a super-2 number, since 2×1887164² = 7122775925792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235892 + ... + 235899.

It is an arithmetic number, because the mean of its divisors is an integer number (550424).

2^1887164 is an apocalyptic number.

It is an amenable number.

1887164 is a deficient number, since it is larger than the sum of its proper divisors (1415380).

1887164 is a wasteful number, since it uses less digits than its factorization.

1887164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471795 (or 471793 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 1887164 is about 1373.7408780407. The cubic root of 1887164 is about 123.5766869518.

The spelling of 1887164 in words is "one million, eight hundred eighty-seven thousand, one hundred sixty-four".