4148557969 has 2 divisors, whose sum is σ = 4148557970. Its totient is φ = 4148557968.

The previous prime is 4148557951. The next prime is 4148558023. The reversal of 4148557969 is 9697558414.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3071930625 + 1076627344 = 55425^2 + 32812^2 .

It is a cyclic number.

It is not a de Polignac number, because 4148557969 - 2⁷ = 4148557841 is a prime.

It is a super-2 number, since 2×4148557969² = 34421066444306809922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4148557169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2074278984 + 2074278985.

It is an arithmetic number, because the mean of its divisors is an integer number (2074278985).

Almost surely, 2^4148557969 is an apocalyptic number.

It is an amenable number.

4148557969 is a deficient number, since it is larger than the sum of its proper divisors (1).

4148557969 is an equidigital number, since it uses as much as digits as its factorization.

4148557969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 58.

The square root of 4148557969 is about 64409.3003299989. The cubic root of 4148557969 is about 1606.8144216303.

The spelling of 4148557969 in words is "four billion, one hundred forty-eight million, five hundred fifty-seven thousand, nine hundred sixty-nine".