1645482839 has 16 divisors (see below), whose sum is σ = 2209320960. Its totient is φ = 1183563360.

The previous prime is 1645482827. The next prime is 1645482851. The reversal of 1645482839 is 9382845461.

It is an interprime number because it is at equal distance from previous prime (1645482827) and next prime (1645482851).

It is not a de Polignac number, because 1645482839 - 2¹² = 1645478743 is a prime.

It is a super-2 number, since 2×1645482839² = 5415227546886999842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645484839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 820919 + ... + 822920.

It is an arithmetic number, because the mean of its divisors is an integer number (138082560).

Almost surely, 2^1645482839 is an apocalyptic number.

1645482839 is a deficient number, since it is larger than the sum of its proper divisors (563838121).

1645482839 is a wasteful number, since it uses less digits than its factorization.

1645482839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1643870.

The product of its digits is 1658880, while the sum is 50.

The square root of 1645482839 is about 40564.5515074430. The cubic root of 1645482839 is about 1180.5864266508.

It can be divided in two parts, 1645 and 482839, that added together give a palindrome (484484).

The spelling of 1645482839 in words is "one billion, six hundred forty-five million, four hundred eighty-two thousand, eight hundred thirty-nine".