1891113016 has 32 divisors (see below), whose sum is σ = 4019576400. Its totient is φ = 826882560.

The previous prime is 1891113001. The next prime is 1891113041. The reversal of 1891113016 is 6103111981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476545 + ... + 480496.

Almost surely, 2^1891113016 is an apocalyptic number.

It is an amenable number.

1891113016 is an abundant number, since it is smaller than the sum of its proper divisors (2128463384).

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

1891113016 is a wasteful number, since it uses less digits than its factorization.

1891113016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957079 (or 957075 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 31.

The square root of 1891113016 is about 43486.9292546623. The cubic root of 1891113016 is about 1236.6282437171.

Adding to 1891113016 its reverse (6103111981), we get a palindrome (7994224997).

The spelling of 1891113016 in words is "one billion, eight hundred ninety-one million, one hundred thirteen thousand, sixteen".