1892161 has 2 divisors, whose sum is σ = 1892162. Its totient is φ = 1892160.

The previous prime is 1892123. The next prime is 1892167. The reversal of 1892161 is 1612981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1252161 + 640000 = 1119^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1892161 - 2¹¹ = 1890113 is a prime.

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

It is not a weakly prime, because it can be changed into another prime (1892167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946080 + 946081.

It is an arithmetic number, because the mean of its divisors is an integer number (946081).

2^1892161 is an apocalyptic number.

It is an amenable number.

1892161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1892161 is an equidigital number, since it uses as much as digits as its factorization.

1892161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 28.

The square root of 1892161 is about 1375.5584320559. The cubic root of 1892161 is about 123.6856632552.

The spelling of 1892161 in words is "one million, eight hundred ninety-two thousand, one hundred sixty-one".