2261689932 has 48 divisors (see below), whose sum is σ = 5472633600. Its totient is φ = 726116160.

The previous prime is 2261689901. The next prime is 2261689933. The reversal of 2261689932 is 2399861622.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2261689933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138057 + ... + 153567.

It is an arithmetic number, because the mean of its divisors is an integer number (114013200).

Almost surely, 2^2261689932 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2261689932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2736316800).

2261689932 is an abundant number, since it is smaller than the sum of its proper divisors (3210943668).

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

2261689932 is a wasteful number, since it uses less digits than its factorization.

2261689932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15966 (or 15964 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 2261689932 is about 47557.2279679966. The cubic root of 2261689932 is about 1312.6361329637.

The spelling of 2261689932 in words is "two billion, two hundred sixty-one million, six hundred eighty-nine thousand, nine hundred thirty-two".