1911996 has 36 divisors (see below), whose sum is σ = 4876872. Its totient is φ = 631584.

The previous prime is 1911991. The next prime is 1912019. The reversal of 1911996 is 6991191.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1911996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1911991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6075 + ... + 6381.

2^1911996 is an apocalyptic number.

It is an amenable number.

1911996 is an abundant number, since it is smaller than the sum of its proper divisors (2964876).

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

1911996 is a wasteful number, since it uses less digits than its factorization.

1911996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490 (or 485 counting only the distinct ones).

The product of its digits is 4374, while the sum is 36.

The square root of 1911996 is about 1382.7494350026. The cubic root of 1911996 is about 124.1163493452.

It can be divided in two parts, 191 and 1996, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1911996 in words is "one million, nine hundred eleven thousand, nine hundred ninety-six".