1641261104 has 40 divisors (see below), whose sum is σ = 3675077280. Its totient is φ = 695490048.

The previous prime is 1641261101. The next prime is 1641261143. The reversal of 1641261104 is 4011621461.

It is not an unprimeable number, because it can be changed into a prime (1641261101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72359 + ... + 92294.

It is an arithmetic number, because the mean of its divisors is an integer number (91876932).

Almost surely, 2^1641261104 is an apocalyptic number.

1641261104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1641261104 is an abundant number, since it is smaller than the sum of its proper divisors (2033816176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1641261104 is a wasteful number, since it uses less digits than its factorization.

1641261104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164757 (or 164751 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1641261104 is about 40512.4808423281. The cubic root of 1641261104 is about 1179.5759042856.

Adding to 1641261104 its reverse (4011621461), we get a palindrome (5652882565).

The spelling of 1641261104 in words is "one billion, six hundred forty-one million, two hundred sixty-one thousand, one hundred four".