2135890418 has 4 divisors (see below), whose sum is σ = 3203835630. Its totient is φ = 1067945208.

The previous prime is 2135890399. The next prime is 2135890439. The reversal of 2135890418 is 8140985312.

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., 1507535929 + 628354489 = 38827^2 + 25067^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 533972603 + ... + 533972606.

Almost surely, 2^2135890418 is an apocalyptic number.

2135890418 is a deficient number, since it is larger than the sum of its proper divisors (1067945212).

2135890418 is a wasteful number, since it uses less digits than its factorization.

2135890418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067945211.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 2135890418 is about 46215.6944987306. The cubic root of 2135890418 is about 1287.8333153798.

The spelling of 2135890418 in words is "two billion, one hundred thirty-five million, eight hundred ninety thousand, four hundred eighteen".