1616321154 has 24 divisors (see below), whose sum is σ = 3760421328. Its totient is φ = 461805960.

The previous prime is 1616321149. The next prime is 1616321191. The reversal of 1616321154 is 4511236161.

It is a happy number.

It is a super-2 number, since 2×1616321154² = 5224988145735783432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2748552 + ... + 2749139.

It is an arithmetic number, because the mean of its divisors is an integer number (156684222).

Almost surely, 2^1616321154 is an apocalyptic number.

1616321154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1616321154 is an abundant number, since it is smaller than the sum of its proper divisors (2144100174).

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

1616321154 is a wasteful number, since it uses less digits than its factorization.

1616321154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497710 (or 5497703 counting only the distinct ones).

The product of its digits is 4320, while the sum is 30.

The square root of 1616321154 is about 40203.4967882148. The cubic root of 1616321154 is about 1173.5705941480.

The spelling of 1616321154 in words is "one billion, six hundred sixteen million, three hundred twenty-one thousand, one hundred fifty-four".