4253281994 has 8 divisors (see below), whose sum is σ = 6870686340. Its totient is φ = 1963053216.

The previous prime is 4253281973. The next prime is 4253281997. The reversal of 4253281994 is 4991823524.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4239702769 + 13579225 = 65113^2 + 3685^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4253281997) 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, 81793859 + ... + 81793910.

Almost surely, 2^4253281994 is an apocalyptic number.

4253281994 is a deficient number, since it is larger than the sum of its proper divisors (2617404346).

4253281994 is a wasteful number, since it uses less digits than its factorization.

4253281994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163587784.

The product of its digits is 622080, while the sum is 47.

The square root of 4253281994 is about 65217.1909391995. The cubic root of 4253281994 is about 1620.2227496886. Note that the first 3 decimals are identical.

The spelling of 4253281994 in words is "four billion, two hundred fifty-three million, two hundred eighty-one thousand, nine hundred ninety-four".