1618028420 has 24 divisors (see below), whose sum is σ = 3420368448. Its totient is φ = 642924000.

The previous prime is 1618028413. The next prime is 1618028441. The reversal of 1618028420 is 248208161.

It is a happy 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, 264866 + ... + 270905.

It is an arithmetic number, because the mean of its divisors is an integer number (142515352).

Almost surely, 2^1618028420 is an apocalyptic number.

1618028420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1618028420 is an abundant number, since it is smaller than the sum of its proper divisors (1802340028).

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

1618028420 is a wasteful number, since it uses less digits than its factorization.

1618028420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535931 (or 535929 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 1618028420 is about 40224.7239891090. The cubic root of 1618028420 is about 1173.9836498782.

The spelling of 1618028420 in words is "one billion, six hundred eighteen million, twenty-eight thousand, four hundred twenty".