1798722377 has 2 divisors, whose sum is σ = 1798722378. Its totient is φ = 1798722376.

The previous prime is 1798722319. The next prime is 1798722473. The reversal of 1798722377 is 7732278971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084977721 + 713744656 = 32939^2 + 26716^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798722377 - 2¹² = 1798718281 is a prime.

It is not a weakly prime, because it can be changed into another prime (1798727377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899361188 + 899361189.

It is an arithmetic number, because the mean of its divisors is an integer number (899361189).

Almost surely, 2^1798722377 is an apocalyptic number.

It is an amenable number.

1798722377 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798722377 is an equidigital number, since it uses as much as digits as its factorization.

1798722377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2074464, while the sum is 53.

The square root of 1798722377 is about 42411.3472669756. The cubic root of 1798722377 is about 1216.1525250249.

The spelling of 1798722377 in words is "one billion, seven hundred ninety-eight million, seven hundred twenty-two thousand, three hundred seventy-seven".