1931906002 has 16 divisors (see below), whose sum is σ = 3122685720. Its totient is φ = 891101952.

The previous prime is 1931905931. The next prime is 1931906023. The reversal of 1931906002 is 2006091391.

It can be written as a sum of positive squares in 4 ways, for example, as 1672728201 + 259177801 = 40899^2 + 16099^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22074 + ... + 65962.

Almost surely, 2^1931906002 is an apocalyptic number.

1931906002 is a deficient number, since it is larger than the sum of its proper divisors (1190779718).

1931906002 is a wasteful number, since it uses less digits than its factorization.

1931906002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45597.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 1931906002 is about 43953.4526743918. The cubic root of 1931906002 is about 1245.4567878105.

Adding to 1931906002 its reverse (2006091391), we get a palindrome (3937997393).

The spelling of 1931906002 in words is "one billion, nine hundred thirty-one million, nine hundred six thousand, two".