1930348237 has 4 divisors (see below), whose sum is σ = 1930443580. Its totient is φ = 1930252896.

The previous prime is 1930348219. The next prime is 1930348241. The reversal of 1930348237 is 7328430391.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7328430391 = 27919 ⋅262489.

It can be written as a sum of positive squares in 2 ways, for example, as 495908361 + 1434439876 = 22269^2 + 37874^2 .

It is a cyclic number.

It is not a de Polignac number, because 1930348237 - 2⁷ = 1930348109 is a prime.

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 1930348237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1930348267) 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, 3912 + ... + 62257.

It is an arithmetic number, because the mean of its divisors is an integer number (482610895).

Almost surely, 2^1930348237 is an apocalyptic number.

It is an amenable number.

1930348237 is a deficient number, since it is larger than the sum of its proper divisors (95343).

1930348237 is an equidigital number, since it uses as much as digits as its factorization.

1930348237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95342.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 1930348237 is about 43935.7284792229. The cubic root of 1930348237 is about 1245.1219456581.

The spelling of 1930348237 in words is "one billion, nine hundred thirty million, three hundred forty-eight thousand, two hundred thirty-seven".