1889910692 has 6 divisors (see below), whose sum is σ = 3307343718. Its totient is φ = 944955344.

The previous prime is 1889910661. The next prime is 1889910697. The reversal of 1889910692 is 2960199881.

It can be written as a sum of positive squares in only one way, i.e., 1829786176 + 60124516 = 42776^2 + 7754^2 .

It is not an unprimeable number, because it can be changed into a prime (1889910697) 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 as a sum of consecutive naturals, namely, 236238833 + ... + 236238840.

It is an arithmetic number, because the mean of its divisors is an integer number (551223953).

Almost surely, 2^1889910692 is an apocalyptic number.

It is an amenable number.

1889910692 is a deficient number, since it is larger than the sum of its proper divisors (1417433026).

1889910692 is a wasteful number, since it uses less digits than its factorization.

1889910692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472477677 (or 472477675 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 53.

The square root of 1889910692 is about 43473.1030868513. The cubic root of 1889910692 is about 1236.3661153635.

The spelling of 1889910692 in words is "one billion, eight hundred eighty-nine million, nine hundred ten thousand, six hundred ninety-two".