1641320084 has 12 divisors (see below), whose sum is σ = 2872777908. Its totient is φ = 820526400.

The previous prime is 1641320069. The next prime is 1641320099. The reversal of 1641320084 is 4800231461.

It is an interprime number because it is at equal distance from previous prime (1641320069) and next prime (1641320099).

It can be written as a sum of positive squares in 2 ways, for example, as 738317584 + 903002500 = 27172^2 + 30050^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2627 + ... + 57354.

It is an arithmetic number, because the mean of its divisors is an integer number (239398159).

Almost surely, 2^1641320084 is an apocalyptic number.

It is an amenable number.

1641320084 is a deficient number, since it is larger than the sum of its proper divisors (1231457824).

1641320084 is a wasteful number, since it uses less digits than its factorization.

1641320084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66826 (or 66824 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1641320084 is about 40513.2087596132. The cubic root of 1641320084 is about 1179.5900337769.

The spelling of 1641320084 in words is "one billion, six hundred forty-one million, three hundred twenty thousand, eighty-four".