2150788481 has 4 divisors (see below), whose sum is σ = 2152442964. Its totient is φ = 2149134000.

The previous prime is 2150788477. The next prime is 2150788499. The reversal of 2150788481 is 1848870512.

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 841000000 + 1309788481 = 29000^2 + 36191^2 .

It is a cyclic number.

It is not a de Polignac number, because 2150788481 - 2² = 2150788477 is a prime.

It is a super-2 number, since 2×2150788481² = 9251782180004574722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2150788411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825290 + ... + 827891.

It is an arithmetic number, because the mean of its divisors is an integer number (538110741).

Almost surely, 2^2150788481 is an apocalyptic number.

It is an amenable number.

2150788481 is a deficient number, since it is larger than the sum of its proper divisors (1654483).

2150788481 is a wasteful number, since it uses less digits than its factorization.

2150788481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654482.

The product of its (nonzero) digits is 143360, while the sum is 44.

The square root of 2150788481 is about 46376.5941073727. The cubic root of 2150788481 is about 1290.8206386244.

The spelling of 2150788481 in words is "two billion, one hundred fifty million, seven hundred eighty-eight thousand, four hundred eighty-one".