2448956781 has 8 divisors (see below), whose sum is σ = 3628084160. Its totient is φ = 1632637836.

The previous prime is 2448956767. The next prime is 2448956803. The reversal of 2448956781 is 1876598442.

It is a happy number.

2448956781 is a `hidden beast` number, since 24 + 489 + 5 + 67 + 81 = 666.

It is not a de Polignac number, because 2448956781 - 2¹⁴ = 2448940397 is a prime.

It is a super-2 number, since 2×2448956781² = 11994778630411763922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2448956701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45351025 + ... + 45351078.

It is an arithmetic number, because the mean of its divisors is an integer number (453510520).

Almost surely, 2^2448956781 is an apocalyptic number.

It is an amenable number.

2448956781 is a deficient number, since it is larger than the sum of its proper divisors (1179127379).

2448956781 is an equidigital number, since it uses as much as digits as its factorization.

2448956781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90702112 (or 90702106 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 2448956781 is about 49486.9354577549. The cubic root of 2448956781 is about 1347.9083807816.

The spelling of 2448956781 in words is "two billion, four hundred forty-eight million, nine hundred fifty-six thousand, seven hundred eighty-one".