981036401 has 2 divisors, whose sum is σ = 981036402. Its totient is φ = 981036400.

The previous prime is 981036361. The next prime is 981036403. The reversal of 981036401 is 104630189.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 956046400 + 24990001 = 30920^2 + 4999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-981036401 is a prime.

Together with 981036403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (981036403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490518200 + 490518201.

It is an arithmetic number, because the mean of its divisors is an integer number (490518201).

Almost surely, 2^981036401 is an apocalyptic number.

It is an amenable number.

981036401 is a deficient number, since it is larger than the sum of its proper divisors (1).

981036401 is an equidigital number, since it uses as much as digits as its factorization.

981036401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 981036401 is about 31321.5006185847. The cubic root of 981036401 is about 993.6384164047.

The spelling of 981036401 in words is "nine hundred eighty-one million, thirty-six thousand, four hundred one".