730157943 has 4 divisors (see below), whose sum is σ = 973543928. Its totient is φ = 486771960.

The previous prime is 730157927. The next prime is 730157957. The reversal of 730157943 is 349751037.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 730157943 - 2⁴ = 730157927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730157443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121692988 + ... + 121692993.

It is an arithmetic number, because the mean of its divisors is an integer number (243385982).

Almost surely, 2^730157943 is an apocalyptic number.

730157943 is a deficient number, since it is larger than the sum of its proper divisors (243385985).

730157943 is a wasteful number, since it uses less digits than its factorization.

730157943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243385984.

The product of its (nonzero) digits is 79380, while the sum is 39.

The square root of 730157943 is about 27021.4348804796. The cubic root of 730157943 is about 900.4762676743.

The spelling of 730157943 in words is "seven hundred thirty million, one hundred fifty-seven thousand, nine hundred forty-three".