730281778291 has 16 divisors (see below), whose sum is σ = 803407828608. Its totient is φ = 659689430400.

The previous prime is 730281778229. The next prime is 730281778397. The reversal of 730281778291 is 192877182037.

It is a de Polignac number, because none of the positive numbers 2^k-730281778291 is a prime.

It is a super-2 number, since 2×730281778291² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730281718291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2181115 + ... + 2493556.

It is an arithmetic number, because the mean of its divisors is an integer number (50212989288).

Almost surely, 2^730281778291 is an apocalyptic number.

730281778291 is a deficient number, since it is larger than the sum of its proper divisors (73126050317).

730281778291 is a wasteful number, since it uses less digits than its factorization.

730281778291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674942.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 730281778291 in words is "seven hundred thirty billion, two hundred eighty-one million, seven hundred seventy-eight thousand, two hundred ninety-one".