1950707621 has 4 divisors (see below), whose sum is σ = 1951546092. Its totient is φ = 1949869152.

The previous prime is 1950707617. The next prime is 1950707623. The reversal of 1950707621 is 1267070591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1246866721 + 703840900 = 35311^2 + 26530^2 .

It is a cyclic number.

It is not a de Polignac number, because 1950707621 - 2² = 1950707617 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 (1950707623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415736 + ... + 420401.

It is an arithmetic number, because the mean of its divisors is an integer number (487886523).

Almost surely, 2^1950707621 is an apocalyptic number.

It is an amenable number.

1950707621 is a deficient number, since it is larger than the sum of its proper divisors (838471).

1950707621 is an equidigital number, since it uses as much as digits as its factorization.

1950707621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838470.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 1950707621 is about 44166.8158349682. The cubic root of 1950707621 is about 1249.4840795702.

The spelling of 1950707621 in words is "one billion, nine hundred fifty million, seven hundred seven thousand, six hundred twenty-one".