2621998481 has 8 divisors (see below), whose sum is σ = 2649144000. Its totient is φ = 2594876400.

The previous prime is 2621998471. The next prime is 2621998493. The reversal of 2621998481 is 1848991262.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2621998481 is a prime.

It is a super-2 number, since 2×2621998481² = 13749752068732614722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2621998411) 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, 300620 + ... + 309218.

It is an arithmetic number, because the mean of its divisors is an integer number (331143000).

Almost surely, 2^2621998481 is an apocalyptic number.

It is an amenable number.

2621998481 is a deficient number, since it is larger than the sum of its proper divisors (27145519).

2621998481 is a wasteful number, since it uses less digits than its factorization.

2621998481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11719.

The product of its digits is 497664, while the sum is 50.

The square root of 2621998481 is about 51205.4536255661. The cubic root of 2621998481 is about 1378.9361122165.

The spelling of 2621998481 in words is "two billion, six hundred twenty-one million, nine hundred ninety-eight thousand, four hundred eighty-one".