1890726133734 has 32 divisors (see below), whose sum is σ = 4202710259040. Its totient is φ = 630077550336.

The previous prime is 1890726133733. The next prime is 1890726133739. The reversal of 1890726133734 is 4373316270981.

1890726133734 is a `hidden beast` number, since 1 + 8 + 9 + 0 + 7 + 261 + 3 + 373 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890726133733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4360387 + ... + 4774350.

It is an arithmetic number, because the mean of its divisors is an integer number (131334695595).

Almost surely, 2^{1890726133734} is an apocalyptic number.

1890726133734 is an abundant number, since it is smaller than the sum of its proper divisors (2311984125306).

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

1890726133734 is a wasteful number, since it uses less digits than its factorization.

1890726133734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9138581 (or 9138575 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 1890726133734 in words is "one trillion, eight hundred ninety billion, seven hundred twenty-six million, one hundred thirty-three thousand, seven hundred thirty-four".