1870121147 has 2 divisors, whose sum is σ = 1870121148. Its totient is φ = 1870121146.

The previous prime is 1870121111. The next prime is 1870121179. The reversal of 1870121147 is 7411210781.

It is an a-pointer prime, because the next prime (1870121179) can be obtained adding 1870121147 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1870121147 - 2⁶ = 1870121083 is a prime.

It is not a weakly prime, because it can be changed into another prime (1870121647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 935060573 + 935060574.

It is an arithmetic number, because the mean of its divisors is an integer number (935060574).

Almost surely, 2^1870121147 is an apocalyptic number.

1870121147 is a deficient number, since it is larger than the sum of its proper divisors (1).

1870121147 is an equidigital number, since it uses as much as digits as its factorization.

1870121147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 32.

The square root of 1870121147 is about 43244.8973521732. The cubic root of 1870121147 is about 1232.0355716085.

The spelling of 1870121147 in words is "one billion, eight hundred seventy million, one hundred twenty-one thousand, one hundred forty-seven".