2485919881 has 9 divisors (see below), whose sum is σ = 2524135719. Its totient is φ = 2448276336.

The previous prime is 2485919873. The next prime is 2485919893. The reversal of 2485919881 is 1889195842.

The square root of 2485919881 is 49859.

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

It can be written as a sum of positive squares in only one way, i.e., 1411129225 + 1074790656 = 37565^2 + 32784^2 .

It is not a de Polignac number, because 2485919881 - 2³ = 2485919873 is a prime.

It is a super-2 number, since 2×2485919881² = 12359595309502108322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2485919801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3639366 + ... + 3640048.

Almost surely, 2^2485919881 is an apocalyptic number.

2485919881 is the 49859-th square number.

2485919881 is the 24930-th centered octagonal number.

It is an amenable number.

2485919881 is a deficient number, since it is larger than the sum of its proper divisors (38215838).

2485919881 is an frugal number, since it uses more digits than its factorization.

2485919881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 756 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 55.

The cubic root of 2485919881 is about 1354.6560550026.

The spelling of 2485919881 in words is "two billion, four hundred eighty-five million, nine hundred nineteen thousand, eight hundred eighty-one".