1891007016 has 16 divisors (see below), whose sum is σ = 4727517600. Its totient is φ = 630335664.

The previous prime is 1891007009. The next prime is 1891007017. The reversal of 1891007016 is 6107001981.

It is a super-2 number, since 2×1891007016² = 7151815069122448512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1891007017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39395956 + ... + 39396003.

It is an arithmetic number, because the mean of its divisors is an integer number (295469850).

Almost surely, 2^1891007016 is an apocalyptic number.

It is an amenable number.

1891007016 is an abundant number, since it is smaller than the sum of its proper divisors (2836510584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1891007016 is a wasteful number, since it uses less digits than its factorization.

1891007016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78791968 (or 78791964 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 33.

The square root of 1891007016 is about 43485.7104805705. The cubic root of 1891007016 is about 1236.6051382686.

Adding to 1891007016 its reverse (6107001981), we get a palindrome (7998008997).

The spelling of 1891007016 in words is "one billion, eight hundred ninety-one million, seven thousand, sixteen".