1892861 has 2 divisors, whose sum is σ = 1892862. Its totient is φ = 1892860.

The previous prime is 1892857. The next prime is 1892867. The reversal of 1892861 is 1682981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1243225 + 649636 = 1115^2 + 806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1892861 - 2² = 1892857 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1892867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946430 + 946431.

It is an arithmetic number, because the mean of its divisors is an integer number (946431).

2^1892861 is an apocalyptic number.

It is an amenable number.

1892861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1892861 is an equidigital number, since it uses as much as digits as its factorization.

1892861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 35.

The square root of 1892861 is about 1375.8128506450. The cubic root of 1892861 is about 123.7009137703.

The spelling of 1892861 in words is "one million, eight hundred ninety-two thousand, eight hundred sixty-one".