1641331461 has 16 divisors (see below), whose sum is σ = 2728447488. Its totient is φ = 852639600.

The previous prime is 1641331421. The next prime is 1641331463.

1641331461 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1641331461 - 2⁹ = 1641330949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1641331463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3552435 + ... + 3552896.

It is an arithmetic number, because the mean of its divisors is an integer number (170527968).

Almost surely, 2^1641331461 is an apocalyptic number.

1641331461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1641331461 is a deficient number, since it is larger than the sum of its proper divisors (1087116027).

1641331461 is a wasteful number, since it uses less digits than its factorization.

1641331461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7105352.

The product of its digits is 5184, while the sum is 30.

The square root of 1641331461 is about 40513.3491703661. The cubic root of 1641331461 is about 1179.5927592589.

It can be divided in two parts, 16413 and 31461, that added together give a palindrome (47874).

The spelling of 1641331461 in words is "one billion, six hundred forty-one million, three hundred thirty-one thousand, four hundred sixty-one".