2091161754 has 48 divisors (see below), whose sum is σ = 5113199520. Its totient is φ = 611832480.

The previous prime is 2091161729. The next prime is 2091161759. The reversal of 2091161754 is 4571611902.

2091161754 is a `hidden beast` number, since 20 + 9 + 11 + 617 + 5 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (2091161759) 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, 176352 + ... + 187835.

It is an arithmetic number, because the mean of its divisors is an integer number (106524990).

Almost surely, 2^2091161754 is an apocalyptic number.

2091161754 is an abundant number, since it is smaller than the sum of its proper divisors (3022037766).

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

2091161754 is a wasteful number, since it uses less digits than its factorization.

2091161754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364235 (or 364232 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 2091161754 is about 45729.2221014091. Note that the first 3 decimals coincide. The cubic root of 2091161754 is about 1278.7801191153.

The spelling of 2091161754 in words is "two billion, ninety-one million, one hundred sixty-one thousand, seven hundred fifty-four".