1662471460 has 24 divisors (see below), whose sum is σ = 3759743736. Its totient is φ = 613835520.

The previous prime is 1662471439. The next prime is 1662471479. The reversal of 1662471460 is 641742661.

It can be written as a sum of positive squares in 4 ways, for example, as 334743616 + 1327727844 = 18296^2 + 36438^2 .

It is a super-2 number, since 2×1662471460² = 5527622710629063200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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, 3196801 + ... + 3197320.

It is an arithmetic number, because the mean of its divisors is an integer number (156655989).

Almost surely, 2^1662471460 is an apocalyptic number.

1662471460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1662471460 is an abundant number, since it is smaller than the sum of its proper divisors (2097272276).

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

1662471460 is a wasteful number, since it uses less digits than its factorization.

1662471460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394143 (or 6394141 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1662471460 is about 40773.4160943132. The cubic root of 1662471460 is about 1184.6354721544.

The spelling of 1662471460 in words is "one billion, six hundred sixty-two million, four hundred seventy-one thousand, four hundred sixty".