1356890218 has 4 divisors (see below), whose sum is σ = 2035335330. Its totient is φ = 678445108.

The previous prime is 1356890177. The next prime is 1356890261. The reversal of 1356890218 is 8120986531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1296936169 + 59954049 = 36013^2 + 7743^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339222553 + ... + 339222556.

Almost surely, 2^1356890218 is an apocalyptic number.

1356890218 is a deficient number, since it is larger than the sum of its proper divisors (678445112).

1356890218 is an equidigital number, since it uses as much as digits as its factorization.

1356890218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678445111.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 1356890218 is about 36835.9907970452. The cubic root of 1356890218 is about 1107.0865397439.

The spelling of 1356890218 in words is "one billion, three hundred fifty-six million, eight hundred ninety thousand, two hundred eighteen".