1911938064 has 20 divisors (see below), whose sum is σ = 4939173456. Its totient is φ = 637312672.

The previous prime is 1911938047. The next prime is 1911938069. The reversal of 1911938064 is 4608391191.

It is not an unprimeable number, because it can be changed into a prime (1911938069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19915974 + ... + 19916069.

Almost surely, 2^1911938064 is an apocalyptic number.

It is an amenable number.

1911938064 is an abundant number, since it is smaller than the sum of its proper divisors (3027235392).

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

1911938064 is a wasteful number, since it uses less digits than its factorization.

1911938064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39832054 (or 39832048 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 1911938064 is about 43725.7139907400. The cubic root of 1911938064 is about 1241.1509570290.

The spelling of 1911938064 in words is "one billion, nine hundred eleven million, nine hundred thirty-eight thousand, sixty-four".