1940451 has 16 divisors (see below), whose sum is σ = 2774400. Its totient is φ = 1202688.

The previous prime is 1940447. The next prime is 1940453. The reversal of 1940451 is 1540491.

It is not a de Polignac number, because 1940451 - 2² = 1940447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3075 + ... + 3651.

It is an arithmetic number, because the mean of its divisors is an integer number (173400).

2^1940451 is an apocalyptic number.

1940451 is a deficient number, since it is larger than the sum of its proper divisors (833949).

1940451 is a wasteful number, since it uses less digits than its factorization.

1940451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 1940451 is about 1393.0007178749. Note that the first 3 decimals coincide. The cubic root of 1940451 is about 124.7290343788.

It can be divided in two parts, 19 and 40451, that added together give a triangular number (40470 = T₂₈₄).

The spelling of 1940451 in words is "one million, nine hundred forty thousand, four hundred fifty-one".