2607263981 has 6 divisors (see below), whose sum is σ = 3032939790. Its totient is φ = 2234797656.

The previous prime is 2607263957. The next prime is 2607263983. The reversal of 2607263981 is 1893627062.

It can be written as a sum of positive squares in only one way, i.e., 2316015625 + 291248356 = 48125^2 + 17066^2 .

It is not a de Polignac number, because 2607263981 - 2¹⁴ = 2607247597 is a prime.

It is a super-2 number, since 2×2607263981² = 13595650933239936722, 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 (2607263983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26604686 + ... + 26604783.

It is an arithmetic number, because the mean of its divisors is an integer number (505489965).

Almost surely, 2^2607263981 is an apocalyptic number.

It is an amenable number.

2607263981 is a deficient number, since it is larger than the sum of its proper divisors (425675809).

2607263981 is an equidigital number, since it uses as much as digits as its factorization.

2607263981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53209483 (or 53209476 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 2607263981 is about 51061.3746485541. The cubic root of 2607263981 is about 1376.3482499553.

The spelling of 2607263981 in words is "two billion, six hundred seven million, two hundred sixty-three thousand, nine hundred eighty-one".