1664085614 has 16 divisors (see below), whose sum is σ = 2580920496. Its totient is φ = 804158400.

The previous prime is 1664085587. The next prime is 1664085649. The reversal of 1664085614 is 4165804661.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

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, 86057 + ... + 103604.

It is an arithmetic number, because the mean of its divisors is an integer number (161307531).

Almost surely, 2^1664085614 is an apocalyptic number.

1664085614 is a deficient number, since it is larger than the sum of its proper divisors (916834882).

1664085614 is a wasteful number, since it uses less digits than its factorization.

1664085614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189811.

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 1664085614 is about 40793.2054881692. The cubic root of 1664085614 is about 1185.0187500223.

The spelling of 1664085614 in words is "one billion, six hundred sixty-four million, eighty-five thousand, six hundred fourteen".