1660149466 has 4 divisors (see below), whose sum is σ = 2490224202. Its totient is φ = 830074732.

The previous prime is 1660149443. The next prime is 1660149473. The reversal of 1660149466 is 6649410661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1533114025 + 127035441 = 39155^2 + 11271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415037365 + ... + 415037368.

Almost surely, 2^1660149466 is an apocalyptic number.

1660149466 is a deficient number, since it is larger than the sum of its proper divisors (830074736).

1660149466 is an equidigital number, since it uses as much as digits as its factorization.

1660149466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830074735.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1660149466 is about 40744.9317829838. The cubic root of 1660149466 is about 1184.0836836130.

The spelling of 1660149466 in words is "one billion, six hundred sixty million, one hundred forty-nine thousand, four hundred sixty-six".