1618566460 has 48 divisors (see below), whose sum is σ = 3928236480. Its totient is φ = 548697600.

The previous prime is 1618566437. The next prime is 1618566487. The reversal of 1618566460 is 646658161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52491 + ... + 77410.

It is an arithmetic number, because the mean of its divisors is an integer number (81838260).

Almost surely, 2^1618566460 is an apocalyptic number.

1618566460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1618566460 is an abundant number, since it is smaller than the sum of its proper divisors (2309670020).

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

1618566460 is a wasteful number, since it uses less digits than its factorization.

1618566460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130006 (or 130004 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 1618566460 is about 40231.4113597820. The cubic root of 1618566460 is about 1174.1137629949.

The spelling of 1618566460 in words is "one billion, six hundred eighteen million, five hundred sixty-six thousand, four hundred sixty".