1952663851 has 2 divisors, whose sum is σ = 1952663852. Its totient is φ = 1952663850.

The previous prime is 1952663849. The next prime is 1952663857. The reversal of 1952663851 is 1583662591.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1952663851 - 2¹ = 1952663849 is a prime.

It is a super-2 number, since 2×1952663851² = 7625792230004300402, which contains 22 as substring.

Together with 1952663849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1952663857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976331925 + 976331926.

It is an arithmetic number, because the mean of its divisors is an integer number (976331926).

Almost surely, 2^1952663851 is an apocalyptic number.

1952663851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1952663851 is an equidigital number, since it uses as much as digits as its factorization.

1952663851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 388800, while the sum is 46.

The square root of 1952663851 is about 44188.9562108000. The cubic root of 1952663851 is about 1249.9016138030.

The spelling of 1952663851 in words is "one billion, nine hundred fifty-two million, six hundred sixty-three thousand, eight hundred fifty-one".