1618368406 has 16 divisors (see below), whose sum is σ = 2436415488. Its totient is φ = 806236200.

The previous prime is 1618368383. The next prime is 1618368413. The reversal of 1618368406 is 6048638161.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972331 + ... + 973993.

It is an arithmetic number, because the mean of its divisors is an integer number (152275968).

Almost surely, 2^1618368406 is an apocalyptic number.

1618368406 is a deficient number, since it is larger than the sum of its proper divisors (818047082).

1618368406 is a wasteful number, since it uses less digits than its factorization.

1618368406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3147.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1618368406 is about 40228.9498495797. The cubic root of 1618368406 is about 1174.0658713537.

The spelling of 1618368406 in words is "one billion, six hundred eighteen million, three hundred sixty-eight thousand, four hundred six".