1357918 has 4 divisors (see below), whose sum is σ = 2036880. Its totient is φ = 678958.

The previous prime is 1357907. The next prime is 1357919. The reversal of 1357918 is 8197531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8197531 = 19 ⋅431449.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1357919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339478 + ... + 339481.

It is an arithmetic number, because the mean of its divisors is an integer number (509220).

2^1357918 is an apocalyptic number.

1357918 is a deficient number, since it is larger than the sum of its proper divisors (678962).

1357918 is an equidigital number, since it uses as much as digits as its factorization.

1357918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678961.

The product of its digits is 7560, while the sum is 34.

The square root of 1357918 is about 1165.2973869361. The cubic root of 1357918 is about 110.7365991595.

The spelling of 1357918 in words is "one million, three hundred fifty-seven thousand, nine hundred eighteen".