1720070953 has 2 divisors, whose sum is σ = 1720070954. Its totient is φ = 1720070952.

The previous prime is 1720070951. The next prime is 1720070977. The reversal of 1720070953 is 3590700271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1559618064 + 160452889 = 39492^2 + 12667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720070953 - 2¹ = 1720070951 is a prime.

Together with 1720070951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1720070951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860035476 + 860035477.

It is an arithmetic number, because the mean of its divisors is an integer number (860035477).

Almost surely, 2^1720070953 is an apocalyptic number.

It is an amenable number.

1720070953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720070953 is an equidigital number, since it uses as much as digits as its factorization.

1720070953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 1720070953 is about 41473.7381122078. The cubic root of 1720070953 is about 1198.1617579467.

The spelling of 1720070953 in words is "one billion, seven hundred twenty million, seventy thousand, nine hundred fifty-three".