2081717154 has 36 divisors (see below), whose sum is σ = 4957703478. Its totient is φ = 630822720.

The previous prime is 2081717147. The next prime is 2081717221. The reversal of 2081717154 is 4517171802.

2081717154 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1329696225 + 752020929 = 36465^2 + 27423^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 475719 + ... + 480074.

Almost surely, 2^2081717154 is an apocalyptic number.

2081717154 is an abundant number, since it is smaller than the sum of its proper divisors (2875986324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2081717154 is a wasteful number, since it uses less digits than its factorization.

2081717154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955823 (or 955809 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 2081717154 is about 45625.8386662645. The cubic root of 2081717154 is about 1276.8520369583.

Adding to 2081717154 its reverse (4517171802), we get a palindrome (6598888956).

The spelling of 2081717154 in words is "two billion, eighty-one million, seven hundred seventeen thousand, one hundred fifty-four".