4257395938 has 4 divisors (see below), whose sum is σ = 6386093910. Its totient is φ = 2128697968.

The previous prime is 4257395903. The next prime is 4257395939. The reversal of 4257395938 is 8395937524.

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

It can be written as a sum of positive squares in only one way, i.e., 2523756169 + 1733639769 = 50237^2 + 41637^2 .

It is not an unprimeable number, because it can be changed into a prime (4257395939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064348983 + ... + 1064348986.

Almost surely, 2^4257395938 is an apocalyptic number.

4257395938 is a deficient number, since it is larger than the sum of its proper divisors (2128697972).

4257395938 is a wasteful number, since it uses less digits than its factorization.

4257395938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128697971.

The product of its digits is 8164800, while the sum is 55.

The square root of 4257395938 is about 65248.7236503520. The cubic root of 4257395938 is about 1620.7449627134.

The spelling of 4257395938 in words is "four billion, two hundred fifty-seven million, three hundred ninety-five thousand, nine hundred thirty-eight".