1616554413 has 12 divisors (see below), whose sum is σ = 2367010620. Its totient is φ = 1062939456.

The previous prime is 1616554399. The next prime is 1616554417. The reversal of 1616554413 is 3144556161.

1616554413 is a `hidden beast` number, since 1 + 61 + 6 + 554 + 41 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 320338404 + 1296216009 = 17898^2 + 36003^2 .

It is not a de Polignac number, because 1616554413 - 2⁶ = 1616554349 is a prime.

It is a super-2 number, since 2×1616554413² = 5226496340379549138, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616554417) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1229598 + ... + 1230911.

It is an arithmetic number, because the mean of its divisors is an integer number (197250885).

Almost surely, 2^1616554413 is an apocalyptic number.

It is an amenable number.

1616554413 is a deficient number, since it is larger than the sum of its proper divisors (750456207).

1616554413 is a wasteful number, since it uses less digits than its factorization.

1616554413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460588 (or 2460585 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 1616554413 is about 40206.3976625611. The cubic root of 1616554413 is about 1173.6270459522.

The spelling of 1616554413 in words is "one billion, six hundred sixteen million, five hundred fifty-four thousand, four hundred thirteen".