1911940 has 12 divisors (see below), whose sum is σ = 4015116. Its totient is φ = 764768.

The previous prime is 1911937. The next prime is 1911961. The reversal of 1911940 is 491191.

It can be written as a sum of positive squares in 2 ways, for example, as 232324 + 1679616 = 482^2 + 1296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47779 + ... + 47818.

It is an arithmetic number, because the mean of its divisors is an integer number (334593).

2^1911940 is an apocalyptic number.

1911940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1911940 is an abundant number, since it is smaller than the sum of its proper divisors (2103176).

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

1911940 is a wasteful number, since it uses less digits than its factorization.

1911940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95606 (or 95604 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 1911940 is about 1382.7291853432. The cubic root of 1911940 is about 124.1151375953.

The spelling of 1911940 in words is "one million, nine hundred eleven thousand, nine hundred forty".