1810979 has 2 divisors, whose sum is σ = 1810980. Its totient is φ = 1810978.

The previous prime is 1810973. The next prime is 1810981. The reversal of 1810979 is 9790181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1810979 - 2⁸ = 1810723 is a prime.

Together with 1810981, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1810973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905489 + 905490.

It is an arithmetic number, because the mean of its divisors is an integer number (905490).

2^1810979 is an apocalyptic number.

1810979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1810979 is an equidigital number, since it uses as much as digits as its factorization.

1810979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1810979 is about 1345.7261980061. The cubic root of 1810979 is about 121.8908591240.

The spelling of 1810979 in words is "one million, eight hundred ten thousand, nine hundred seventy-nine".