2802749481 has 27 divisors (see below), whose sum is σ = 4711250583. Its totient is φ = 1600935840.

The previous prime is 2802749473. The next prime is 2802749501. The reversal of 2802749481 is 1849472082.

2802749481 = T₄₁ + T₄₂ + ... + T₂₅₆₁.

The square root of 2802749481 is 52941.

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

2802749481 is a `hidden beast` number, since 2 + 80 + 2 + 7 + 494 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2223081 + 2800526400 = 1491^2 + 52920^2 .

It is not a de Polignac number, because 2802749481 - 2³ = 2802749473 is a prime.

It is a super-2 number, since 2×2802749481² = 15710809306491538722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2802749581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 1110501 + ... + 1113021.

Almost surely, 2^2802749481 is an apocalyptic number.

2802749481 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2802749481 is the 52941-st square number.

2802749481 is the 26471-st centered octagonal number.

It is an amenable number.

2802749481 is a deficient number, since it is larger than the sum of its proper divisors (1908501102).

2802749481 is an frugal number, since it uses more digits than its factorization.

2802749481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062 (or 2531 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The cubic root of 2802749481 is about 1409.9209386785.

The spelling of 2802749481 in words is "two billion, eight hundred two million, seven hundred forty-nine thousand, four hundred eighty-one".