901944361 has 2 divisors, whose sum is σ = 901944362. Its totient is φ = 901944360.

The previous prime is 901944319. The next prime is 901944389. The reversal of 901944361 is 163449109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 824838400 + 77105961 = 28720^2 + 8781^2 .

It is a cyclic number.

It is not a de Polignac number, because 901944361 - 2¹⁹ = 901420073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 901944361.

It is not a weakly prime, because it can be changed into another prime (901944161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450972180 + 450972181.

It is an arithmetic number, because the mean of its divisors is an integer number (450972181).

Almost surely, 2^901944361 is an apocalyptic number.

It is an amenable number.

901944361 is a deficient number, since it is larger than the sum of its proper divisors (1).

901944361 is an equidigital number, since it uses as much as digits as its factorization.

901944361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 901944361 is about 30032.3885330488. The cubic root of 901944361 is about 966.1841659565.

The spelling of 901944361 in words is "nine hundred one million, nine hundred forty-four thousand, three hundred sixty-one".