1942732561 has 48 divisors (see below), whose sum is σ = 2560086144. Its totient is φ = 1441440000.

The previous prime is 1942732531. The next prime is 1942732633. The reversal of 1942732561 is 1652372491.

It is a happy number.

It is not a de Polignac number, because 1942732561 - 2¹⁵ = 1942699793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1942732531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1492611 + ... + 1493911.

It is an arithmetic number, because the mean of its divisors is an integer number (53335128).

Almost surely, 2^1942732561 is an apocalyptic number.

1942732561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1942732561 is a deficient number, since it is larger than the sum of its proper divisors (617353583).

1942732561 is a wasteful number, since it uses less digits than its factorization.

1942732561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1403 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 1942732561 is about 44076.4399764772. The cubic root of 1942732561 is about 1247.7790024197.

The spelling of 1942732561 in words is "one billion, nine hundred forty-two million, seven hundred thirty-two thousand, five hundred sixty-one".