1828691 has 2 divisors, whose sum is σ = 1828692. Its totient is φ = 1828690.

The previous prime is 1828681. The next prime is 1828703. The reversal of 1828691 is 1968281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1828691 - 2⁶ = 1828627 is a prime.

It is a super-2 number, since 2×1828691² = 6688221546962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1828601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 914345 + 914346.

It is an arithmetic number, because the mean of its divisors is an integer number (914346).

2^1828691 is an apocalyptic number.

1828691 is a deficient number, since it is larger than the sum of its proper divisors (1).

1828691 is an equidigital number, since it uses as much as digits as its factorization.

1828691 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 1828691 is about 1352.2910189748. The cubic root of 1828691 is about 122.2869488503.

The spelling of 1828691 in words is "one million, eight hundred twenty-eight thousand, six hundred ninety-one".