5405091894 has 48 divisors (see below), whose sum is σ = 12409630272. Its totient is φ = 1694386944.

The previous prime is 5405091883. The next prime is 5405091907. The reversal of 5405091894 is 4981905045.

5405091894 is a `hidden beast` number, since 5 + 40 + 509 + 18 + 94 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 429232 + ... + 441644.

It is an arithmetic number, because the mean of its divisors is an integer number (258533964).

Almost surely, 2^5405091894 is an apocalyptic number.

5405091894 is an abundant number, since it is smaller than the sum of its proper divisors (7004538378).

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

5405091894 is a wasteful number, since it uses less digits than its factorization.

5405091894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13861 (or 13858 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 5405091894 is about 73519.3300703971. The cubic root of 5405091894 is about 1754.9619063005.

The spelling of 5405091894 in words is "five billion, four hundred five million, ninety-one thousand, eight hundred ninety-four".