19891962 has 12 divisors (see below), whose sum is σ = 43099290. Its totient is φ = 6630648.

The previous prime is 19891961. The next prime is 19891967. The reversal of 19891962 is 26919891.

It can be written as a sum of positive squares in only one way, i.e., 18326961 + 1565001 = 4281^2 + 1251^2 .

It is not an unprimeable number, because it can be changed into a prime (19891961) 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, 552537 + ... + 552572.

Almost surely, 2^19891962 is an apocalyptic number.

19891962 is an abundant number, since it is smaller than the sum of its proper divisors (23207328).

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

19891962 is a wasteful number, since it uses less digits than its factorization.

19891962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105117 (or 1105114 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 19891962 is about 4460.0405827750. The cubic root of 19891962 is about 270.9521118343.

The spelling of 19891962 in words is "nineteen million, eight hundred ninety-one thousand, nine hundred sixty-two".