2018391654 has 16 divisors (see below), whose sum is σ = 4044720240. Its totient is φ = 671474400.

The previous prime is 2018391647. The next prime is 2018391707. The reversal of 2018391654 is 4561938102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327397 + ... + 333504.

It is an arithmetic number, because the mean of its divisors is an integer number (252795015).

Almost surely, 2^2018391654 is an apocalyptic number.

2018391654 is an abundant number, since it is smaller than the sum of its proper divisors (2026328586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2018391654 is a wasteful number, since it uses less digits than its factorization.

2018391654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661415.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2018391654 is about 44926.5139310853. The cubic root of 2018391654 is about 1263.7712772302.

It can be divided in two parts, 2018391 and 654, that added together give a triangular number (2019045 = T₂₀₀₉).

The spelling of 2018391654 in words is "two billion, eighteen million, three hundred ninety-one thousand, six hundred fifty-four".