1920001002 has 16 divisors (see below), whose sum is σ = 3912455520. Its totient is φ = 627924752.

The previous prime is 1920001001. The next prime is 1920001007. The reversal of 1920001002 is 2001000291.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1920001001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3018552 + ... + 3019187.

It is an arithmetic number, because the mean of its divisors is an integer number (244528470).

Almost surely, 2^1920001002 is an apocalyptic number.

1920001002 is an abundant number, since it is smaller than the sum of its proper divisors (1992454518).

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

1920001002 is a wasteful number, since it uses less digits than its factorization.

1920001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037797.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1920001002 is about 43817.8160341202. The cubic root of 1920001002 is about 1242.8932185931.

Adding to 1920001002 its reverse (2001000291), we get a palindrome (3921001293).

The spelling of 1920001002 in words is "one billion, nine hundred twenty million, one thousand, two".