7243938057 has 4 divisors (see below), whose sum is σ = 9658584080. Its totient is φ = 4829292036.

The previous prime is 7243938019. The next prime is 7243938089. The reversal of 7243938057 is 7508393427.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7243938057 - 2⁸ = 7243937801 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7243937997 and 7243938015.

It is not an unprimeable number, because it can be changed into a prime (7243934057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1207323007 + ... + 1207323012.

It is an arithmetic number, because the mean of its divisors is an integer number (2414646020).

Almost surely, 2^7243938057 is an apocalyptic number.

It is an amenable number.

7243938057 is a deficient number, since it is larger than the sum of its proper divisors (2414646023).

7243938057 is a wasteful number, since it uses less digits than its factorization.

7243938057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414646022.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The square root of 7243938057 is about 85111.3274306070. The cubic root of 7243938057 is about 1934.8987438418.

The spelling of 7243938057 in words is "seven billion, two hundred forty-three million, nine hundred thirty-eight thousand, fifty-seven".