1661040150 has 96 divisors (see below), whose sum is σ = 5135885568. Its totient is φ = 345148800.

The previous prime is 1661040137. The next prime is 1661040169. The reversal of 1661040150 is 510401661.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1661040150.

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 47 ways as a sum of consecutive naturals, for example, 60357 + ... + 83456.

It is an arithmetic number, because the mean of its divisors is an integer number (53498808).

Almost surely, 2^1661040150 is an apocalyptic number.

1661040150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661040150 is an abundant number, since it is smaller than the sum of its proper divisors (3474845418).

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

1661040150 is a wasteful number, since it uses less digits than its factorization.

1661040150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143846 (or 143841 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1661040150 is about 40755.8603148063. The cubic root of 1661040150 is about 1184.2954026702.

The spelling of 1661040150 in words is "one billion, six hundred sixty-one million, forty thousand, one hundred fifty".