1616462666 has 48 divisors (see below), whose sum is σ = 3049965576. Its totient is φ = 636862464.

The previous prime is 1616462657. The next prime is 1616462669. The reversal of 1616462666 is 6662646161.

It can be written as a sum of positive squares in 4 ways, for example, as 1483867441 + 132595225 = 38521^2 + 11515^2 .

It is a super-2 number, since 2×1616462666² = 5225903101143655112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616462669) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324950 + ... + 329886.

Almost surely, 2^1616462666 is an apocalyptic number.

1616462666 is a deficient number, since it is larger than the sum of its proper divisors (1433502910).

1616462666 is a wasteful number, since it uses less digits than its factorization.

1616462666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223 (or 5216 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 1616462666 is about 40205.2566961088. The cubic root of 1616462666 is about 1173.6048425965.

The spelling of 1616462666 in words is "one billion, six hundred sixteen million, four hundred sixty-two thousand, six hundred sixty-six".