2673643481 has 4 divisors (see below), whose sum is σ = 2717473764. Its totient is φ = 2629813200.

The previous prime is 2673643477. The next prime is 2673643493. The reversal of 2673643481 is 1843463762.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 967210000 + 1706433481 = 31100^2 + 41309^2 .

It is a cyclic number.

It is not a de Polignac number, because 2673643481 - 2² = 2673643477 is a prime.

It is a super-2 number, since 2×2673643481² = 14296738926987594722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2673643411) 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, 21915050 + ... + 21915171.

It is an arithmetic number, because the mean of its divisors is an integer number (679368441).

Almost surely, 2^2673643481 is an apocalyptic number.

It is an amenable number.

2673643481 is a deficient number, since it is larger than the sum of its proper divisors (43830283).

2673643481 is an equidigital number, since it uses as much as digits as its factorization.

2673643481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43830282.

The product of its digits is 580608, while the sum is 44.

The square root of 2673643481 is about 51707.2865368122. The cubic root of 2673643481 is about 1387.9308587630.

The spelling of 2673643481 in words is "two billion, six hundred seventy-three million, six hundred forty-three thousand, four hundred eighty-one".