1406162725818 has 8 divisors (see below), whose sum is σ = 2812325451648. Its totient is φ = 468720908604.

The previous prime is 1406162725763. The next prime is 1406162725819. The reversal of 1406162725818 is 8185272616041.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1406162725818 is an admirable number.

It is a super-2 number, since 2×1406162725818² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1406162725819) 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 3 ways as a sum of consecutive naturals, for example, 117180227146 + ... + 117180227157.

It is an arithmetic number, because the mean of its divisors is an integer number (351540681456).

Almost surely, 2^{1406162725818} is an apocalyptic number.

1406162725818 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1406162725818 is a wasteful number, since it uses less digits than its factorization.

1406162725818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234360454308.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The spelling of 1406162725818 in words is "one trillion, four hundred six billion, one hundred sixty-two million, seven hundred twenty-five thousand, eight hundred eighteen".