1916872147 has 16 divisors (see below), whose sum is σ = 1978020000. Its totient is φ = 1856784384.

The previous prime is 1916872123. The next prime is 1916872183. The reversal of 1916872147 is 7412786191.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1916872147 - 2¹⁹ = 1916347859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1916872097 and 1916872106.

It is not an unprimeable number, because it can be changed into a prime (1916872117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2593504 + ... + 2594242.

It is an arithmetic number, because the mean of its divisors is an integer number (123626250).

Almost surely, 2^1916872147 is an apocalyptic number.

1916872147 is a deficient number, since it is larger than the sum of its proper divisors (61147853).

1916872147 is a wasteful number, since it uses less digits than its factorization.

1916872147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350.

The product of its digits is 169344, while the sum is 46.

The square root of 1916872147 is about 43782.0984764321. The cubic root of 1916872147 is about 1242.2177073129.

The spelling of 1916872147 in words is "one billion, nine hundred sixteen million, eight hundred seventy-two thousand, one hundred forty-seven".