1618449534 has 24 divisors (see below), whose sum is σ = 3776382792. Its totient is φ = 497984400.

The previous prime is 1618449517. The next prime is 1618449541. The reversal of 1618449534 is 4359448161.

It is a self number, because there is not a number n which added to its sum of digits gives 1618449534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3457992 + ... + 3458459.

It is an arithmetic number, because the mean of its divisors is an integer number (157349283).

Almost surely, 2^1618449534 is an apocalyptic number.

1618449534 is an abundant number, since it is smaller than the sum of its proper divisors (2157933258).

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

1618449534 is a wasteful number, since it uses less digits than its factorization.

1618449534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6916472 (or 6916469 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 1618449534 is about 40229.9581655263. The cubic root of 1618449534 is about 1174.0854894711.

It can be divided in two parts, 16184495 and 34, that added together give a square (16184529 = 4023²).

The spelling of 1618449534 in words is "one billion, six hundred eighteen million, four hundred forty-nine thousand, five hundred thirty-four".