1641133215 has 24 divisors (see below), whose sum is σ = 2861677728. Its totient is φ = 870025920.

The previous prime is 1641133201. The next prime is 1641133217. The reversal of 1641133215 is 5123311461.

It is a happy number.

1641133215 is a `hidden beast` number, since 1 + 6 + 411 + 33 + 215 = 666.

It is not a de Polignac number, because 1641133215 - 2⁵ = 1641133183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641133217) 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 23 ways as a sum of consecutive naturals, for example, 101676 + ... + 116705.

It is an arithmetic number, because the mean of its divisors is an integer number (119236572).

Almost surely, 2^1641133215 is an apocalyptic number.

1641133215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1641133215 is a deficient number, since it is larger than the sum of its proper divisors (1220544513).

1641133215 is a wasteful number, since it uses less digits than its factorization.

1641133215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218559 (or 218556 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1641133215 is about 40510.9024214470. The cubic root of 1641133215 is about 1179.5452655081.

Adding to 1641133215 its reverse (5123311461), we get a palindrome (6764444676).

The spelling of 1641133215 in words is "one billion, six hundred forty-one million, one hundred thirty-three thousand, two hundred fifteen".