2632801981 has 2 divisors, whose sum is σ = 2632801982. Its totient is φ = 2632801980.

The previous prime is 2632801957. The next prime is 2632801987. The reversal of 2632801981 is 1891082362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1481557081 + 1151244900 = 38491^2 + 33930^2 .

It is a cyclic number.

It is not a de Polignac number, because 2632801981 - 2⁵ = 2632801949 is a prime.

It is a super-2 number, since 2×2632801981² = 13863292542315048722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2632801987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1316400990 + 1316400991.

It is an arithmetic number, because the mean of its divisors is an integer number (1316400991).

Almost surely, 2^2632801981 is an apocalyptic number.

It is an amenable number.

2632801981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2632801981 is an equidigital number, since it uses as much as digits as its factorization.

2632801981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 2632801981 is about 51310.8368768236. The cubic root of 2632801981 is about 1380.8274077880.

The spelling of 2632801981 in words is "two billion, six hundred thirty-two million, eight hundred one thousand, nine hundred eighty-one".