1405748894 has 16 divisors (see below), whose sum is σ = 2301473520. Its totient is φ = 638655360.

The previous prime is 1405748893. The next prime is 1405748933. The reversal of 1405748894 is 4988475041.

It is a super-3 number, since 3×1405748894³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405748893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31832 + ... + 61844.

It is an arithmetic number, because the mean of its divisors is an integer number (143842095).

Almost surely, 2^1405748894 is an apocalyptic number.

1405748894 is a deficient number, since it is larger than the sum of its proper divisors (895724626).

1405748894 is a wasteful number, since it uses less digits than its factorization.

1405748894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32155.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The square root of 1405748894 is about 37493.3179913435. The cubic root of 1405748894 is about 1120.2180947518.

The spelling of 1405748894 in words is "one billion, four hundred five million, seven hundred forty-eight thousand, eight hundred ninety-four".