1641546255 has 64 divisors (see below), whose sum is σ = 2824777728. Its totient is φ = 812436480.

The previous prime is 1641546241. The next prime is 1641546259. The reversal of 1641546255 is 5526451461.

It is a Cunningham number, because it is equal to 40516²-1.

It is not a de Polignac number, because 1641546255 - 2⁴ = 1641546239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641546259) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1255312 + ... + 1256618.

It is an arithmetic number, because the mean of its divisors is an integer number (44137152).

Almost surely, 2^1641546255 is an apocalyptic number.

1641546255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1641546255 is a deficient number, since it is larger than the sum of its proper divisors (1183231473).

1641546255 is a wasteful number, since it uses less digits than its factorization.

With its successor (1641546256) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1456).

1641546255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456.

The product of its digits is 144000, while the sum is 39.

The square root of 1641546255 is about 40515.9999876592. Note that the first 4 decimals coincide. The cubic root of 1641546255 is about 1179.6442130941.

The spelling of 1641546255 in words is "one billion, six hundred forty-one million, five hundred forty-six thousand, two hundred fifty-five".