2245643401 has 2 divisors, whose sum is σ = 2245643402. Its totient is φ = 2245643400.

The previous prime is 2245643399. The next prime is 2245643419. The reversal of 2245643401 is 1043465422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2038974025 + 206669376 = 45155^2 + 14376^2 .

It is a cyclic number.

It is not a de Polignac number, because 2245643401 - 2¹ = 2245643399 is a prime.

Together with 2245643399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2245643501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1122821700 + 1122821701.

It is an arithmetic number, because the mean of its divisors is an integer number (1122821701).

Almost surely, 2^2245643401 is an apocalyptic number.

It is an amenable number.

2245643401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2245643401 is an equidigital number, since it uses as much as digits as its factorization.

2245643401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 2245643401 is about 47388.2200657505. The cubic root of 2245643401 is about 1309.5244084827.

The spelling of 2245643401 in words is "two billion, two hundred forty-five million, six hundred forty-three thousand, four hundred one".