2147218357 has 2 divisors, whose sum is σ = 2147218358. Its totient is φ = 2147218356.

The previous prime is 2147218351. The next prime is 2147218363. The reversal of 2147218357 is 7538127412.

It is a balanced prime because it is at equal distance from previous prime (2147218351) and next prime (2147218363).

It can be written as a sum of positive squares in only one way, i.e., 1976158116 + 171060241 = 44454^2 + 13079^2 .

It is a cyclic number.

It is not a de Polignac number, because 2147218357 - 2³ = 2147218349 is a prime.

It is a super-2 number, since 2×2147218357² = 9221093345275558898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2147218351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073609178 + 1073609179.

It is an arithmetic number, because the mean of its divisors is an integer number (1073609179).

Almost surely, 2^2147218357 is an apocalyptic number.

It is an amenable number.

2147218357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2147218357 is an equidigital number, since it uses as much as digits as its factorization.

2147218357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 94080, while the sum is 40.

The square root of 2147218357 is about 46338.0875414599. The cubic root of 2147218357 is about 1290.1060259788.

The spelling of 2147218357 in words is "two billion, one hundred forty-seven million, two hundred eighteen thousand, three hundred fifty-seven".