2261858481 has 27 divisors (see below), whose sum is σ = 3324370777. Its totient is φ = 1481938440.

The previous prime is 2261858471. The next prime is 2261858497. The reversal of 2261858481 is 1848581622.

The square root of 2261858481 is 47559.

It is a perfect power (a square), and thus also a powerful number.

2261858481 is a `hidden beast` number, since 2 + 2 + 61 + 8 + 584 + 8 + 1 = 666.

It is not a de Polignac number, because 2261858481 - 2¹¹ = 2261856433 is a prime.

It is a super-2 number, since 2×2261858481² = 10232007576143254722, 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 (2261858461) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11842096 + ... + 11842286.

Almost surely, 2^2261858481 is an apocalyptic number.

2261858481 is the 47559-th square number.

2261858481 is the 23780-th centered octagonal number.

It is an amenable number.

2261858481 is a deficient number, since it is larger than the sum of its proper divisors (1062512296).

2261858481 is an frugal number, since it uses more digits than its factorization.

2261858481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554 (or 277 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The cubic root of 2261858481 is about 1312.6687395570.

The spelling of 2261858481 in words is "two billion, two hundred sixty-one million, eight hundred fifty-eight thousand, four hundred eighty-one".