1950886813 has 4 divisors (see below), whose sum is σ = 1951412320. Its totient is φ = 1950361308.

The previous prime is 1950886787. The next prime is 1950886829. The reversal of 1950886813 is 3186880591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3186880591 = 6983 ⋅456377.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1950886813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1950884813) 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, 257145 + ... + 264622.

It is an arithmetic number, because the mean of its divisors is an integer number (487853080).

Almost surely, 2^1950886813 is an apocalyptic number.

It is an amenable number.

1950886813 is a deficient number, since it is larger than the sum of its proper divisors (525507).

1950886813 is an equidigital number, since it uses as much as digits as its factorization.

1950886813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525506.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1950886813 is about 44168.8443702119. The cubic root of 1950886813 is about 1249.5223376008.

The spelling of 1950886813 in words is "one billion, nine hundred fifty million, eight hundred eighty-six thousand, eight hundred thirteen".