1641465511 has 16 divisors (see below), whose sum is σ = 1943654400. Its totient is φ = 1356350688.

The previous prime is 1641465509. The next prime is 1641465547. The reversal of 1641465511 is 1155641461.

It is not a de Polignac number, because 1641465511 - 2¹ = 1641465509 is a prime.

It is a super-2 number, since 2×1641465511² = 5388818047604982242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641465011) 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 in 15 ways as a sum of consecutive naturals, for example, 132730 + ... + 144568.

It is an arithmetic number, because the mean of its divisors is an integer number (121478400).

Almost surely, 2^1641465511 is an apocalyptic number.

1641465511 is a deficient number, since it is larger than the sum of its proper divisors (302188889).

1641465511 is a wasteful number, since it uses less digits than its factorization.

1641465511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12558.

The product of its digits is 14400, while the sum is 34.

The square root of 1641465511 is about 40515.0035295568. The cubic root of 1641465511 is about 1179.6248714208.

The spelling of 1641465511 in words is "one billion, six hundred forty-one million, four hundred sixty-five thousand, five hundred eleven".