1982449141 has 2 divisors, whose sum is σ = 1982449142. Its totient is φ = 1982449140.

The previous prime is 1982449111. The next prime is 1982449177. The reversal of 1982449141 is 1419442891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1965060241 + 17388900 = 44329^2 + 4170^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982449141 - 2⁷ = 1982449013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1982449111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991224570 + 991224571.

It is an arithmetic number, because the mean of its divisors is an integer number (991224571).

Almost surely, 2^1982449141 is an apocalyptic number.

It is an amenable number.

1982449141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1982449141 is an equidigital number, since it uses as much as digits as its factorization.

1982449141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 1982449141 is about 44524.7025930550. The cubic root of 1982449141 is about 1256.2247671111.

The spelling of 1982449141 in words is "one billion, nine hundred eighty-two million, four hundred forty-nine thousand, one hundred forty-one".