2149891187103 has 24 divisors (see below), whose sum is σ = 3479266988496. Its totient is φ = 1267749100800.

The previous prime is 2149891187071. The next prime is 2149891187123. The reversal of 2149891187103 is 3017811989412.

2149891187103 is a `hidden beast` number, since 21 + 498 + 9 + 118 + 7 + 10 + 3 = 666.

It is not a de Polignac number, because 2149891187103 - 2⁵ = 2149891187071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2149891187103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149891187123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293456778 + ... + 293464103.

It is an arithmetic number, because the mean of its divisors is an integer number (144969457854).

Almost surely, 2^{2149891187103} is an apocalyptic number.

2149891187103 is a deficient number, since it is larger than the sum of its proper divisors (1329375801393).

2149891187103 is a wasteful number, since it uses less digits than its factorization.

2149891187103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586920935 (or 586920932 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 54.

The spelling of 2149891187103 in words is "two trillion, one hundred forty-nine billion, eight hundred ninety-one million, one hundred eighty-seven thousand, one hundred three".