4994321251 has 4 divisors (see below), whose sum is σ = 5288104872. Its totient is φ = 4700537632.

The previous prime is 4994321243. The next prime is 4994321329. The reversal of 4994321251 is 1521234994.

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

It is a cyclic number.

It is not a de Polignac number, because 4994321251 - 2³ = 4994321243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4994321201) 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, 146891785 + ... + 146891818.

It is an arithmetic number, because the mean of its divisors is an integer number (1322026218).

Almost surely, 2^4994321251 is an apocalyptic number.

4994321251 is a deficient number, since it is larger than the sum of its proper divisors (293783621).

4994321251 is a wasteful number, since it uses less digits than its factorization.

4994321251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293783620.

The product of its digits is 77760, while the sum is 40.

The square root of 4994321251 is about 70670.5118914530. The cubic root of 4994321251 is about 1709.3283331593.

The spelling of 4994321251 in words is "four billion, nine hundred ninety-four million, three hundred twenty-one thousand, two hundred fifty-one".