1661603614 has 8 divisors (see below), whose sum is σ = 2718987768. Its totient is φ = 755274360.

The previous prime is 1661603591. The next prime is 1661603617. The reversal of 1661603614 is 4163061661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1661603614.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661603617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37763697 + ... + 37763740.

It is an arithmetic number, because the mean of its divisors is an integer number (339873471).

Almost surely, 2^1661603614 is an apocalyptic number.

1661603614 is a deficient number, since it is larger than the sum of its proper divisors (1057384154).

1661603614 is a wasteful number, since it uses less digits than its factorization.

1661603614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75527450.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1661603614 is about 40762.7724032603. The cubic root of 1661603614 is about 1184.4293011762.

The spelling of 1661603614 in words is "one billion, six hundred sixty-one million, six hundred three thousand, six hundred fourteen".