1640984416 has 12 divisors (see below), whose sum is σ = 3230688132. Its totient is φ = 820492192.

The previous prime is 1640984413. The next prime is 1640984417. The reversal of 1640984416 is 6144890461.

It is a super-2 number, since 2×1640984416² = 5385659707109722112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1640984413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25640350 + ... + 25640413.

It is an arithmetic number, because the mean of its divisors is an integer number (269224011).

Almost surely, 2^1640984416 is an apocalyptic number.

1640984416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1640984416 is a deficient number, since it is larger than the sum of its proper divisors (1589703716).

1640984416 is an equidigital number, since it uses as much as digits as its factorization.

1640984416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51280773 (or 51280765 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1640984416 is about 40509.0658495108. The cubic root of 1640984416 is about 1179.5096152515.

The spelling of 1640984416 in words is "one billion, six hundred forty million, nine hundred eighty-four thousand, four hundred sixteen".