490378061 has 2 divisors, whose sum is σ = 490378062. Its totient is φ = 490378060.

The previous prime is 490378037. The next prime is 490378093. The reversal of 490378061 is 160873094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384905161 + 105472900 = 19619^2 + 10270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490378061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490378001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245189030 + 245189031.

It is an arithmetic number, because the mean of its divisors is an integer number (245189031).

Almost surely, 2^490378061 is an apocalyptic number.

It is an amenable number.

490378061 is a deficient number, since it is larger than the sum of its proper divisors (1).

490378061 is an equidigital number, since it uses as much as digits as its factorization.

490378061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 490378061 is about 22144.4815021711. The cubic root of 490378061 is about 788.5762215202.

The spelling of 490378061 in words is "four hundred ninety million, three hundred seventy-eight thousand, sixty-one".