2478781429 has 2 divisors, whose sum is σ = 2478781430. Its totient is φ = 2478781428.

The previous prime is 2478781427. The next prime is 2478781489. The reversal of 2478781429 is 9241878742.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2430687204 + 48094225 = 49302^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 2478781429 - 2¹ = 2478781427 is a prime.

It is a super-2 number, since 2×2478781429² = 12288714745510564082, which contains 22 as substring.

Together with 2478781427, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2478781427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1239390714 + 1239390715.

It is an arithmetic number, because the mean of its divisors is an integer number (1239390715).

Almost surely, 2^2478781429 is an apocalyptic number.

It is an amenable number.

2478781429 is a deficient number, since it is larger than the sum of its proper divisors (1).

2478781429 is an equidigital number, since it uses as much as digits as its factorization.

2478781429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 52.

The square root of 2478781429 is about 49787.3621414109. The cubic root of 2478781429 is about 1353.3581560895.

The spelling of 2478781429 in words is "two billion, four hundred seventy-eight million, seven hundred eighty-one thousand, four hundred twenty-nine".