1650128892 has 24 divisors (see below), whose sum is σ = 3904532352. Its totient is φ = 542295600.

The previous prime is 1650128869. The next prime is 1650128899. The reversal of 1650128892 is 2988210561.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650128899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 967534 + ... + 969237.

It is an arithmetic number, because the mean of its divisors is an integer number (162688848).

Almost surely, 2^1650128892 is an apocalyptic number.

1650128892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1650128892 is an abundant number, since it is smaller than the sum of its proper divisors (2254403460).

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

1650128892 is a wasteful number, since it uses less digits than its factorization.

1650128892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936849 (or 1936847 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 42.

The square root of 1650128892 is about 40621.7785430426. The cubic root of 1650128892 is about 1181.6965188102.

The spelling of 1650128892 in words is "one billion, six hundred fifty million, one hundred twenty-eight thousand, eight hundred ninety-two".