1921064 has 16 divisors (see below), whose sum is σ = 3616800. Its totient is φ = 956592.

The previous prime is 1921063. The next prime is 1921069. The reversal of 1921064 is 4601291.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1921063) 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, 3239 + ... + 3785.

It is an arithmetic number, because the mean of its divisors is an integer number (226050).

2^1921064 is an apocalyptic number.

It is an amenable number.

1921064 is a deficient number, since it is larger than the sum of its proper divisors (1695736).

1921064 is a wasteful number, since it uses less digits than its factorization.

1921064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 988 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1921064 is about 1386.0245308074. The cubic root of 1921064 is about 124.3122549942.

The spelling of 1921064 in words is "one million, nine hundred twenty-one thousand, sixty-four".