1914921 has 20 divisors (see below), whose sum is σ = 2927232. Its totient is φ = 1246968.

The previous prime is 1914889. The next prime is 1914923. The reversal of 1914921 is 1294191.

It is not a de Polignac number, because 1914921 - 2⁵ = 1914889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

1914921 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1914923) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3556 + ... + 4058.

2^1914921 is an apocalyptic number.

It is an amenable number.

1914921 is a deficient number, since it is larger than the sum of its proper divisors (1012311).

1914921 is an equidigital number, since it uses as much as digits as its factorization.

1914921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 553 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 1914921 is about 1383.8067061552. The cubic root of 1914921 is about 124.1796087786.

The spelling of 1914921 in words is "one million, nine hundred fourteen thousand, nine hundred twenty-one".