73018380949 has 2 divisors, whose sum is σ = 73018380950. Its totient is φ = 73018380948.

The previous prime is 73018380917. The next prime is 73018380973. The reversal of 73018380949 is 94908381037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45745509924 + 27272871025 = 213882^2 + 165145^2 .

It is an emirp because it is prime and its reverse (94908381037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73018380949 - 2⁵ = 73018380917 is a prime.

It is a super-2 number, since 2×73018380949² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73018380896 and 73018380905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73018389949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36509190474 + 36509190475.

It is an arithmetic number, because the mean of its divisors is an integer number (36509190475).

Almost surely, 2^73018380949 is an apocalyptic number.

It is an amenable number.

73018380949 is a deficient number, since it is larger than the sum of its proper divisors (1).

73018380949 is an equidigital number, since it uses as much as digits as its factorization.

73018380949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The spelling of 73018380949 in words is "seventy-three billion, eighteen million, three hundred eighty thousand, nine hundred forty-nine".