1618646466 has 32 divisors (see below), whose sum is σ = 3429449280. Its totient is φ = 507554816.

The previous prime is 1618646443. The next prime is 1618646467. The reversal of 1618646466 is 6646468161.

It is a super-5 number, since 5×1618646466⁵ (a number of 47 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (1618646467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 371050 + ... + 375386.

It is an arithmetic number, because the mean of its divisors is an integer number (107170290).

Almost surely, 2^1618646466 is an apocalyptic number.

1618646466 is an abundant number, since it is smaller than the sum of its proper divisors (1810802814).

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

1618646466 is a wasteful number, since it uses less digits than its factorization.

1618646466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8018.

The product of its digits is 995328, while the sum is 48.

The square root of 1618646466 is about 40232.4056700566. The cubic root of 1618646466 is about 1174.1331082201.

The spelling of 1618646466 in words is "one billion, six hundred eighteen million, six hundred forty-six thousand, four hundred sixty-six".