1970121151 has 2 divisors, whose sum is σ = 1970121152. Its totient is φ = 1970121150.

The previous prime is 1970121149. The next prime is 1970121157. The reversal of 1970121151 is 1511210791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1970121151 - 2¹ = 1970121149 is a prime.

Together with 1970121149, 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 (1970121157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985060575 + 985060576.

It is an arithmetic number, because the mean of its divisors is an integer number (985060576).

Almost surely, 2^1970121151 is an apocalyptic number.

1970121151 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970121151 is an equidigital number, since it uses as much as digits as its factorization.

1970121151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 28.

The square root of 1970121151 is about 44386.0468052743. The cubic root of 1970121151 is about 1253.6153786948.

The spelling of 1970121151 in words is "one billion, nine hundred seventy million, one hundred twenty-one thousand, one hundred fifty-one".