2193497481 has 8 divisors (see below), whose sum is σ = 3342472384. Its totient is φ = 1253427120.

The previous prime is 2193497477. The next prime is 2193497533. The reversal of 2193497481 is 1847943912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2193497481 - 2² = 2193497477 is a prime.

It is a super-2 number, since 2×2193497481² = 9622862398306690722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2193497481.

It is not an unprimeable number, because it can be changed into a prime (2193497441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52226110 + ... + 52226151.

It is an arithmetic number, because the mean of its divisors is an integer number (417809048).

Almost surely, 2^2193497481 is an apocalyptic number.

2193497481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2193497481 is a deficient number, since it is larger than the sum of its proper divisors (1148974903).

2193497481 is a wasteful number, since it uses less digits than its factorization.

2193497481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104452271.

The product of its digits is 435456, while the sum is 48.

The square root of 2193497481 is about 46834.7892169913. The cubic root of 2193497481 is about 1299.3088004099.

The spelling of 2193497481 in words is "two billion, one hundred ninety-three million, four hundred ninety-seven thousand, four hundred eighty-one".