1191954 has 8 divisors (see below), whose sum is σ = 2383920. Its totient is φ = 397316.

The previous prime is 1191947. The next prime is 1191973. The reversal of 1191954 is 4591911.

It is a sphenic number, since it is the product of 3 distinct primes.

1191954 is an admirable number.

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, 99324 + ... + 99335.

It is an arithmetic number, because the mean of its divisors is an integer number (297990).

2^1191954 is an apocalyptic number.

1191954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1191954 is a wasteful number, since it uses less digits than its factorization.

1191954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198664.

The product of its digits is 1620, while the sum is 30.

The square root of 1191954 is about 1091.7664585432. The cubic root of 1191954 is about 106.0278199200.

It can be divided in two parts, 1191 and 954, that added together give a triangular number (2145 = T₆₅).

The spelling of 1191954 in words is "one million, one hundred ninety-one thousand, nine hundred fifty-four".