1790081 has 2 divisors, whose sum is σ = 1790082. Its totient is φ = 1790080.

The previous prime is 1790077. The next prime is 1790111. The reversal of 1790081 is 1800971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1540081 + 250000 = 1241^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 1790081 - 2² = 1790077 is a prime.

It is a super-2 number, since 2×1790081² = 6408779973122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1790081.

It is not a weakly prime, because it can be changed into another prime (1790051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895040 + 895041.

It is an arithmetic number, because the mean of its divisors is an integer number (895041).

2^1790081 is an apocalyptic number.

It is an amenable number.

1790081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1790081 is an equidigital number, since it uses as much as digits as its factorization.

1790081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1790081 is about 1337.9390868048. The cubic root of 1790081 is about 121.4201861404.

The spelling of 1790081 in words is "one million, seven hundred ninety thousand, eighty-one".