1870143349 has 2 divisors, whose sum is σ = 1870143350. Its totient is φ = 1870143348.

The previous prime is 1870143347. The next prime is 1870143389. The reversal of 1870143349 is 9433410781.

It is an a-pointer prime, because the next prime (1870143389) can be obtained adding 1870143349 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1829272900 + 40870449 = 42770^2 + 6393^2 .

It is a cyclic number.

It is not a de Polignac number, because 1870143349 - 2¹ = 1870143347 is a prime.

It is a super-2 number, since 2×1870143349² = 6994872291617871602, which contains 22 as substring.

Together with 1870143347, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1870143347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 935071674 + 935071675.

It is an arithmetic number, because the mean of its divisors is an integer number (935071675).

Almost surely, 2^1870143349 is an apocalyptic number.

It is an amenable number.

1870143349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1870143349 is an equidigital number, since it uses as much as digits as its factorization.

1870143349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1870143349 is about 43245.1540522172. The cubic root of 1870143349 is about 1232.0404471474.

The spelling of 1870143349 in words is "one billion, eight hundred seventy million, one hundred forty-three thousand, three hundred forty-nine".