1891097296 has 20 divisors (see below), whose sum is σ = 3997092384. Its totient is φ = 859589600.

The previous prime is 1891097291. The next prime is 1891097297. The reversal of 1891097296 is 6927901981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891097291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5372260 + ... + 5372611.

Almost surely, 2^1891097296 is an apocalyptic number.

1891097296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1891097296 is an abundant number, since it is smaller than the sum of its proper divisors (2105995088).

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

1891097296 is a wasteful number, since it uses less digits than its factorization.

1891097296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10744890 (or 10744884 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 52.

The square root of 1891097296 is about 43486.7485103221. The cubic root of 1891097296 is about 1236.6248171900.

The spelling of 1891097296 in words is "one billion, eight hundred ninety-one million, ninety-seven thousand, two hundred ninety-six".