1661412412 has 48 divisors (see below), whose sum is σ = 3240445824. Its totient is φ = 738920000.

The previous prime is 1661412391. The next prime is 1661412427. The reversal of 1661412412 is 2142141661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144287 + ... + 1145737.

It is an arithmetic number, because the mean of its divisors is an integer number (67509288).

Almost surely, 2^1661412412 is an apocalyptic number.

It is an amenable number.

1661412412 is a deficient number, since it is larger than the sum of its proper divisors (1579033412).

1661412412 is a wasteful number, since it uses less digits than its factorization.

1661412412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2008 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 1661412412 is about 40760.4270340731. The cubic root of 1661412412 is about 1184.3838683713.

The spelling of 1661412412 in words is "one billion, six hundred sixty-one million, four hundred twelve thousand, four hundred twelve".