1952866213 has 4 divisors (see below), whose sum is σ = 1974808620. Its totient is φ = 1930923808.

The previous prime is 1952866187. The next prime is 1952866217. The reversal of 1952866213 is 3126682591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3126682591 = 41 ⋅76260551.

It can be written as a sum of positive squares in 2 ways, for example, as 414814689 + 1538051524 = 20367^2 + 39218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1952866213 is a prime.

It is a super-2 number, since 2×1952866213² = 7627372891753922738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1952866213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1952866217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10971070 + ... + 10971247.

It is an arithmetic number, because the mean of its divisors is an integer number (493702155).

Almost surely, 2^1952866213 is an apocalyptic number.

It is an amenable number.

1952866213 is a deficient number, since it is larger than the sum of its proper divisors (21942407).

1952866213 is an equidigital number, since it uses as much as digits as its factorization.

1952866213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21942406.

The product of its digits is 155520, while the sum is 43.

The square root of 1952866213 is about 44191.2458864875. The cubic root of 1952866213 is about 1249.9447896682.

The spelling of 1952866213 in words is "one billion, nine hundred fifty-two million, eight hundred sixty-six thousand, two hundred thirteen".