1191490 has 16 divisors (see below), whose sum is σ = 2257920. Its totient is φ = 451440.

The previous prime is 1191481. The next prime is 1191499. The reversal of 1191490 is 941911.

It is an interprime number because it is at equal distance from previous prime (1191481) and next prime (1191499).

It is not an unprimeable number, because it can be changed into a prime (1191499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2946 + ... + 3325.

It is an arithmetic number, because the mean of its divisors is an integer number (141120).

2^1191490 is an apocalyptic number.

1191490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1191490 is a deficient number, since it is larger than the sum of its proper divisors (1066430).

1191490 is a wasteful number, since it uses less digits than its factorization.

1191490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6297.

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

The square root of 1191490 is about 1091.5539382000. The cubic root of 1191490 is about 106.0140600787.

It can be divided in two parts, 1191 and 490, that added together give a square (1681 = 41²).

The spelling of 1191490 in words is "one million, one hundred ninety-one thousand, four hundred ninety".