1950502681 has 2 divisors, whose sum is σ = 1950502682. Its totient is φ = 1950502680.

The previous prime is 1950502663. The next prime is 1950502709. The reversal of 1950502681 is 1862050591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071973081 + 878529600 = 32741^2 + 29640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1950502681 - 2¹³ = 1950494489 is a prime.

It is a super-2 number, since 2×1950502681² = 7608921417176375522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1950502681.

It is not a weakly prime, because it can be changed into another prime (1950502651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975251340 + 975251341.

It is an arithmetic number, because the mean of its divisors is an integer number (975251341).

Almost surely, 2^1950502681 is an apocalyptic number.

It is an amenable number.

1950502681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1950502681 is an equidigital number, since it uses as much as digits as its factorization.

1950502681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 1950502681 is about 44164.4957063929. The cubic root of 1950502681 is about 1249.4403213920.

The spelling of 1950502681 in words is "one billion, nine hundred fifty million, five hundred two thousand, six hundred eighty-one".