1618376406 has 16 divisors (see below), whose sum is σ = 3242145648. Its totient is φ = 538560000.

The previous prime is 1618376401. The next prime is 1618376447. The reversal of 1618376406 is 6046738161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618376401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220795 + ... + 228006.

It is an arithmetic number, because the mean of its divisors is an integer number (202634103).

Almost surely, 2^1618376406 is an apocalyptic number.

1618376406 is an abundant number, since it is smaller than the sum of its proper divisors (1623769242).

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

1618376406 is a wasteful number, since it uses less digits than its factorization.

1618376406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449407.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1618376406 is about 40229.0492803397. The cubic root of 1618376406 is about 1174.0678059176.

The spelling of 1618376406 in words is "one billion, six hundred eighteen million, three hundred seventy-six thousand, four hundred six".