1916930137 has 4 divisors (see below), whose sum is σ = 1917325540. Its totient is φ = 1916534736.

The previous prime is 1916930117. The next prime is 1916930161. The reversal of 1916930137 is 7310396191.

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 1266221056 + 650709081 = 35584^2 + 25509^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916930137 - 2¹⁹ = 1916405849 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 1916930137.

It is not an unprimeable number, because it can be changed into a prime (1916930117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190338 + ... + 200155.

It is an arithmetic number, because the mean of its divisors is an integer number (479331385).

Almost surely, 2^1916930137 is an apocalyptic number.

It is an amenable number.

1916930137 is a deficient number, since it is larger than the sum of its proper divisors (395403).

1916930137 is an equidigital number, since it uses as much as digits as its factorization.

1916930137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395402.

The product of its (nonzero) digits is 30618, while the sum is 40.

The square root of 1916930137 is about 43782.7607283963. The cubic root of 1916930137 is about 1242.2302338793.

The spelling of 1916930137 in words is "one billion, nine hundred sixteen million, nine hundred thirty thousand, one hundred thirty-seven".