1816483961 has 4 divisors (see below), whose sum is σ = 1912088400. Its totient is φ = 1720879524.

The previous prime is 1816483943. The next prime is 1816483969. The reversal of 1816483961 is 1693846181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1816483961 - 2¹⁸ = 1816221817 is a prime.

It is a super-2 number, since 2×1816483961² = 6599227961140499042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1816483969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47802191 + ... + 47802228.

It is an arithmetic number, because the mean of its divisors is an integer number (478022100).

Almost surely, 2^1816483961 is an apocalyptic number.

It is an amenable number.

1816483961 is a deficient number, since it is larger than the sum of its proper divisors (95604439).

1816483961 is an equidigital number, since it uses as much as digits as its factorization.

1816483961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95604438.

The product of its digits is 248832, while the sum is 47.

The square root of 1816483961 is about 42620.2294808463. The cubic root of 1816483961 is about 1220.1424094712.

The spelling of 1816483961 in words is "one billion, eight hundred sixteen million, four hundred eighty-three thousand, nine hundred sixty-one".