1916947285 has 16 divisors (see below), whose sum is σ = 2657074752. Its totient is φ = 1312134400.

The previous prime is 1916947273. The next prime is 1916947303. The reversal of 1916947285 is 5827496191.

It is not a de Polignac number, because 1916947285 - 2¹³ = 1916939093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024171 + ... + 1026040.

It is an arithmetic number, because the mean of its divisors is an integer number (166067172).

Almost surely, 2^1916947285 is an apocalyptic number.

It is an amenable number.

1916947285 is a deficient number, since it is larger than the sum of its proper divisors (740127467).

1916947285 is a wasteful number, since it uses less digits than its factorization.

1916947285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2050244.

The product of its digits is 1088640, while the sum is 52.

The square root of 1916947285 is about 43782.9565584601. The cubic root of 1916947285 is about 1242.2339380137.

The spelling of 1916947285 in words is "one billion, nine hundred sixteen million, nine hundred forty-seven thousand, two hundred eighty-five".