1616729412 has 24 divisors (see below), whose sum is σ = 3788993376. Its totient is φ = 536534848.

The previous prime is 1616729383. The next prime is 1616729441. The reversal of 1616729412 is 2149276161.

It is an interprime number because it is at equal distance from previous prime (1616729383) and next prime (1616729441).

It is a super-2 number, since 2×1616729412² = 5227627983251731488, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294033 + ... + 299480.

It is an arithmetic number, because the mean of its divisors is an integer number (157874724).

Almost surely, 2^1616729412 is an apocalyptic number.

1616729412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1616729412 is an abundant number, since it is smaller than the sum of its proper divisors (2172263964).

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

1616729412 is a wasteful number, since it uses less digits than its factorization.

1616729412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593747 (or 593745 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 1616729412 is about 40208.5738618022. The cubic root of 1616729412 is about 1173.6693944903.

The spelling of 1616729412 in words is "one billion, six hundred sixteen million, seven hundred twenty-nine thousand, four hundred twelve".