1879641 has 9 divisors (see below), whose sum is σ = 2720991. Its totient is φ = 1250352.

The previous prime is 1879621. The next prime is 1879643. The reversal of 1879641 is 1469781.

The square root of 1879641 is 1371.

It is a perfect power (a square), and thus also a powerful number.

1879641 is a `hidden beast` number, since 1 + 8 + 7 + 9 + 641 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1625625 + 254016 = 1275^2 + 504^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1879641 - 2¹³ = 1871449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1879596 and 1879605.

It is not an unprimeable number, because it can be changed into a prime (1879643) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3885 + ... + 4341.

2^1879641 is an apocalyptic number.

1879641 is the 1371-st square number.

1879641 is the 686-th centered octagonal number.

It is an amenable number.

1879641 is a deficient number, since it is larger than the sum of its proper divisors (841350).

1879641 is an frugal number, since it uses more digits than its factorization.

1879641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 460 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The cubic root of 1879641 is about 123.4122593587.

Multiplying 1879641 by its sum of digits (36), we get a square (67667076 = 8226²).

The spelling of 1879641 in words is "one million, eight hundred seventy-nine thousand, six hundred forty-one".