1940484641 has 2 divisors, whose sum is σ = 1940484642. Its totient is φ = 1940484640.

The previous prime is 1940484617. The next prime is 1940484673. The reversal of 1940484641 is 1464840491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606326241 + 334158400 = 40079^2 + 18280^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940484641 - 2¹⁸ = 1940222497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1940484691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970242320 + 970242321.

It is an arithmetic number, because the mean of its divisors is an integer number (970242321).

Almost surely, 2^1940484641 is an apocalyptic number.

It is an amenable number.

1940484641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940484641 is an equidigital number, since it uses as much as digits as its factorization.

1940484641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 1940484641 is about 44050.9323510865. The cubic root of 1940484641 is about 1247.2975517091.

The spelling of 1940484641 in words is "one billion, nine hundred forty million, four hundred eighty-four thousand, six hundred forty-one".