1661412414 has 64 divisors (see below), whose sum is σ = 3688312320. Its totient is φ = 496634880.

The previous prime is 1661412391. The next prime is 1661412427. The reversal of 1661412414 is 4142141661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175207 + ... + 184445.

It is an arithmetic number, because the mean of its divisors is an integer number (57629880).

Almost surely, 2^1661412414 is an apocalyptic number.

1661412414 is an abundant number, since it is smaller than the sum of its proper divisors (2026899906).

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

1661412414 is a wasteful number, since it uses less digits than its factorization.

1661412414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345.

The product of its digits is 4608, while the sum is 30.

The square root of 1661412414 is about 40760.4270586067. The cubic root of 1661412414 is about 1184.3838688466.

The spelling of 1661412414 in words is "one billion, six hundred sixty-one million, four hundred twelve thousand, four hundred fourteen".