749488321019 has 2 divisors, whose sum is σ = 749488321020. Its totient is φ = 749488321018.

The previous prime is 749488321013. The next prime is 749488321037. The reversal of 749488321019 is 910123884947.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (910123884947) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-749488321019 is a prime.

It is a super-2 number, since 2×749488321019² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (749488321013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374744160509 + 374744160510.

It is an arithmetic number, because the mean of its divisors is an integer number (374744160510).

Almost surely, 2^749488321019 is an apocalyptic number.

749488321019 is a deficient number, since it is larger than the sum of its proper divisors (1).

749488321019 is an equidigital number, since it uses as much as digits as its factorization.

749488321019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 749488321019 in words is "seven hundred forty-nine billion, four hundred eighty-eight million, three hundred twenty-one thousand, nineteen".