1666379502 has 12 divisors (see below), whose sum is σ = 3610488960. Its totient is φ = 555459828.

The previous prime is 1666379489. The next prime is 1666379513. The reversal of 1666379502 is 2059736661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46288302 + ... + 46288337.

It is an arithmetic number, because the mean of its divisors is an integer number (300874080).

Almost surely, 2^1666379502 is an apocalyptic number.

1666379502 is an abundant number, since it is smaller than the sum of its proper divisors (1944109458).

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

1666379502 is a wasteful number, since it uses less digits than its factorization.

1666379502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92576647 (or 92576644 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 1666379502 is about 40821.3118603506. The cubic root of 1666379502 is about 1185.5630033134.

The spelling of 1666379502 in words is "one billion, six hundred sixty-six million, three hundred seventy-nine thousand, five hundred two".