1418981555 has 4 divisors (see below), whose sum is σ = 1702777872. Its totient is φ = 1135185240.

The previous prime is 1418981549. The next prime is 1418981581. The reversal of 1418981555 is 5551898141.

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

It is not a de Polignac number, because 1418981555 - 2⁶ = 1418981491 is a prime.

It is a Duffinian 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, 141898151 + ... + 141898160.

It is an arithmetic number, because the mean of its divisors is an integer number (425694468).

Almost surely, 2^1418981555 is an apocalyptic number.

1418981555 is a deficient number, since it is larger than the sum of its proper divisors (283796317).

1418981555 is an equidigital number, since it uses as much as digits as its factorization.

1418981555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283796316.

The product of its digits is 288000, while the sum is 47.

The square root of 1418981555 is about 37669.3715769191. The cubic root of 1418981555 is about 1123.7220860565.

The spelling of 1418981555 in words is "one billion, four hundred eighteen million, nine hundred eighty-one thousand, five hundred fifty-five".