749373019181 has 2 divisors, whose sum is σ = 749373019182. Its totient is φ = 749373019180.

The previous prime is 749373019159. The next prime is 749373019211. The reversal of 749373019181 is 181910373947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 434730554281 + 314642464900 = 659341^2 + 560930^2 .

It is an emirp because it is prime and its reverse (181910373947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749373019181 - 2²⁶ = 749305910317 is a prime.

It is a super-2 number, since 2×749373019181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749373019141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374686509590 + 374686509591.

It is an arithmetic number, because the mean of its divisors is an integer number (374686509591).

Almost surely, 2^749373019181 is an apocalyptic number.

It is an amenable number.

749373019181 is a deficient number, since it is larger than the sum of its proper divisors (1).

749373019181 is an equidigital number, since it uses as much as digits as its factorization.

749373019181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 749373019181 in words is "seven hundred forty-nine billion, three hundred seventy-three million, nineteen thousand, one hundred eighty-one".