1616748420 has 48 divisors (see below), whose sum is σ = 5173596288. Its totient is φ = 369542400.

The previous prime is 1616748409. The next prime is 1616748431. The reversal of 1616748420 is 248476161.

It is an interprime number because it is at equal distance from previous prime (1616748409) and next prime (1616748431).

It is a super-2 number, since 2×1616748420² = 5227750907144992800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1924281 + ... + 1925120.

It is an arithmetic number, because the mean of its divisors is an integer number (107783256).

Almost surely, 2^1616748420 is an apocalyptic number.

1616748420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1616748420 is an abundant number, since it is smaller than the sum of its proper divisors (3556847868).

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

1616748420 is a wasteful number, since it uses less digits than its factorization.

1616748420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849420 (or 3849418 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1616748420 is about 40208.8102286054. The cubic root of 1616748420 is about 1173.6739941098.

The spelling of 1616748420 in words is "one billion, six hundred sixteen million, seven hundred forty-eight thousand, four hundred twenty".