1878541 has 12 divisors (see below), whose sum is σ = 2224992. Its totient is φ = 1552824.

The previous prime is 1878493. The next prime is 1878553. The reversal of 1878541 is 1458781.

It is a de Polignac number, because none of the positive numbers 2^k-1878541 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1878497 and 1878506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878581) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23740 + ... + 23818.

It is an arithmetic number, because the mean of its divisors is an integer number (185416).

2^1878541 is an apocalyptic number.

It is an amenable number.

1878541 is a deficient number, since it is larger than the sum of its proper divisors (346451).

1878541 is an frugal number, since it uses more digits than its factorization.

1878541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 129 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 1878541 is about 1370.5987742589. The cubic root of 1878541 is about 123.3881802968.

The spelling of 1878541 in words is "one million, eight hundred seventy-eight thousand, five hundred forty-one".