1318390 has 8 divisors (see below), whose sum is σ = 2373120. Its totient is φ = 527352.

The previous prime is 1318379. The next prime is 1318409. The reversal of 1318390 is 938131.

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

It is a congruent 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, 65910 + ... + 65929.

It is an arithmetic number, because the mean of its divisors is an integer number (296640).

2^1318390 is an apocalyptic number.

1318390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1318390 is a deficient number, since it is larger than the sum of its proper divisors (1054730).

1318390 is a wasteful number, since it uses less digits than its factorization.

1318390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131846.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1318390 is about 1148.2116529630. The cubic root of 1318390 is about 109.6515142245.

The spelling of 1318390 in words is "one million, three hundred eighteen thousand, three hundred ninety".