1642882461 has 12 divisors (see below), whose sum is σ = 2407751136. Its totient is φ = 995686120.

The previous prime is 1642882441. The next prime is 1642882477.

1642882461 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1642882461 - 2⁷ = 1642882333 is a prime.

It is a super-2 number, since 2×1642882461² = 5398125561322833042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642882441) 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 11 ways as a sum of consecutive naturals, for example, 2262561 + ... + 2263286.

It is an arithmetic number, because the mean of its divisors is an integer number (200645928).

Almost surely, 2^1642882461 is an apocalyptic number.

1642882461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1642882461 is a deficient number, since it is larger than the sum of its proper divisors (764868675).

1642882461 is a wasteful number, since it uses less digits than its factorization.

1642882461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4525872 (or 4525861 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 1642882461 is about 40532.4864892348. The cubic root of 1642882461 is about 1179.9642000534.

It can be divided in two parts, 16428 and 82461, that added together give a palindrome (98889).

The spelling of 1642882461 in words is "one billion, six hundred forty-two million, eight hundred eighty-two thousand, four hundred sixty-one".