373836221749 has 2 divisors, whose sum is σ = 373836221750. Its totient is φ = 373836221748.

The previous prime is 373836221657. The next prime is 373836221777. The reversal of 373836221749 is 947122638373.

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., 326705982724 + 47130239025 = 571582^2 + 217095^2 .

It is an emirp because it is prime and its reverse (947122638373) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 373836221749 - 2¹³ = 373836213557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 373836221749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (373836221149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186918110874 + 186918110875.

It is an arithmetic number, because the mean of its divisors is an integer number (186918110875).

Almost surely, 2^373836221749 is an apocalyptic number.

It is an amenable number.

373836221749 is a deficient number, since it is larger than the sum of its proper divisors (1).

373836221749 is an equidigital number, since it uses as much as digits as its factorization.

373836221749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 55.

The spelling of 373836221749 in words is "three hundred seventy-three billion, eight hundred thirty-six million, two hundred twenty-one thousand, seven hundred forty-nine".