1912012002 has 12 divisors (see below), whose sum is σ = 4142692710. Its totient is φ = 637337328.

The previous prime is 1912011979. The next prime is 1912012007. The reversal of 1912012002 is 2002102191.

It can be written as a sum of positive squares in only one way, i.e., 1844788401 + 67223601 = 42951^2 + 8199^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 106222889 = 1912012002 / (1 + 9 + 1 + 2 + 0 + 1 + 2 + 0 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (1912012007) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53111427 + ... + 53111462.

Almost surely, 2^1912012002 is an apocalyptic number.

1912012002 is an abundant number, since it is smaller than the sum of its proper divisors (2230680708).

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

1912012002 is a wasteful number, since it uses less digits than its factorization.

1912012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106222897 (or 106222894 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1912012002 is about 43726.5594576111. The cubic root of 1912012002 is about 1241.1669559846.

Adding to 1912012002 its reverse (2002102191), we get a palindrome (3914114193).

The spelling of 1912012002 in words is "one billion, nine hundred twelve million, twelve thousand, two".