1661927932 has 24 divisors (see below), whose sum is σ = 3356771040. Its totient is φ = 705201600.

The previous prime is 1661927923. The next prime is 1661927947. The reversal of 1661927932 is 2397291661.

It is a happy number.

It is a zygodrome in base 2.

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, 291007 + ... + 296662.

It is an arithmetic number, because the mean of its divisors is an integer number (139865460).

Almost surely, 2^1661927932 is an apocalyptic number.

It is an amenable number.

1661927932 is an abundant number, since it is smaller than the sum of its proper divisors (1694843108).

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

1661927932 is a wasteful number, since it uses less digits than its factorization.

1661927932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587781 (or 587779 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 1661927932 is about 40766.7503242532. The cubic root of 1661927932 is about 1184.5063566082.

It can be divided in two parts, 16619 and 27932, that added together give a triangular number (44551 = T₂₉₈).

The spelling of 1661927932 in words is "one billion, six hundred sixty-one million, nine hundred twenty-seven thousand, nine hundred thirty-two".