1840519489 has 2 divisors, whose sum is σ = 1840519490. Its totient is φ = 1840519488.

The previous prime is 1840519469. The next prime is 1840519517. The reversal of 1840519489 is 9849150481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1667333889 + 173185600 = 40833^2 + 13160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1840519489 - 2²⁵ = 1806965057 is a prime.

It is a super-2 number, since 2×1840519489² = 6775023978777642242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1840519469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920259744 + 920259745.

It is an arithmetic number, because the mean of its divisors is an integer number (920259745).

Almost surely, 2^1840519489 is an apocalyptic number.

It is an amenable number.

1840519489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840519489 is an equidigital number, since it uses as much as digits as its factorization.

1840519489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1840519489 is about 42901.2760765924. The cubic root of 1840519489 is about 1225.5004455891.

The spelling of 1840519489 in words is "one billion, eight hundred forty million, five hundred nineteen thousand, four hundred eighty-nine".