1952501909 has 2 divisors, whose sum is σ = 1952501910. Its totient is φ = 1952501908.

The previous prime is 1952501891. The next prime is 1952501933. The reversal of 1952501909 is 9091052591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1202563684 + 749938225 = 34678^2 + 27385^2 .

It is a cyclic number.

It is not a de Polignac number, because 1952501909 - 2¹⁶ = 1952436373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1952501939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976250954 + 976250955.

It is an arithmetic number, because the mean of its divisors is an integer number (976250955).

Almost surely, 2^1952501909 is an apocalyptic number.

It is an amenable number.

1952501909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952501909 is an equidigital number, since it uses as much as digits as its factorization.

1952501909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 41.

The square root of 1952501909 is about 44187.1237918921. The cubic root of 1952501909 is about 1249.8670597820.

The spelling of 1952501909 in words is "one billion, nine hundred fifty-two million, five hundred one thousand, nine hundred nine".