1952902121 has 2 divisors, whose sum is σ = 1952902122. Its totient is φ = 1952902120.

The previous prime is 1952902057. The next prime is 1952902141. The reversal of 1952902121 is 1212092591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1531626496 + 421275625 = 39136^2 + 20525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1952902121 - 2⁶ = 1952902057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1952902141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976451060 + 976451061.

It is an arithmetic number, because the mean of its divisors is an integer number (976451061).

Almost surely, 2^1952902121 is an apocalyptic number.

It is an amenable number.

1952902121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952902121 is an equidigital number, since it uses as much as digits as its factorization.

1952902121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 1952902121 is about 44191.6521641814. The cubic root of 1952902121 is about 1249.9524506713.

The spelling of 1952902121 in words is "one billion, nine hundred fifty-two million, nine hundred two thousand, one hundred twenty-one".