4781994127 has 2 divisors, whose sum is σ = 4781994128. Its totient is φ = 4781994126.

The previous prime is 4781994047. The next prime is 4781994163. The reversal of 4781994127 is 7214991874.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4781994127 - 2⁷ = 4781993999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4781994197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2390997063 + 2390997064.

It is an arithmetic number, because the mean of its divisors is an integer number (2390997064).

Almost surely, 2^4781994127 is an apocalyptic number.

4781994127 is a deficient number, since it is larger than the sum of its proper divisors (1).

4781994127 is an equidigital number, since it uses as much as digits as its factorization.

4781994127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 52.

The square root of 4781994127 is about 69151.9640140466. The cubic root of 4781994127 is about 1684.7534179993.

The spelling of 4781994127 in words is "four billion, seven hundred eighty-one million, nine hundred ninety-four thousand, one hundred twenty-seven".