1892561 has 6 divisors (see below), whose sum is σ = 2080386. Its totient is φ = 1720400.

The previous prime is 1892551. The next prime is 1892563. The reversal of 1892561 is 1652981.

It can be written as a sum of positive squares in only one way, i.e., 1890625 + 1936 = 1375^2 + 44^2 .

It is not a de Polignac number, because 1892561 - 2⁶ = 1892497 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1892563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7700 + ... + 7941.

It is an arithmetic number, because the mean of its divisors is an integer number (346731).

2^1892561 is an apocalyptic number.

1892561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1892561 is a deficient number, since it is larger than the sum of its proper divisors (187825).

1892561 is a wasteful number, since it uses less digits than its factorization.

1892561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15663 (or 15652 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 1892561 is about 1375.7038198682. The cubic root of 1892561 is about 123.6943782957.

The spelling of 1892561 in words is "one million, eight hundred ninety-two thousand, five hundred sixty-one".