1616562145 has 32 divisors (see below), whose sum is σ = 2172998016. Its totient is φ = 1144281600.

The previous prime is 1616562071. The next prime is 1616562179. The reversal of 1616562145 is 5412656161.

It is a de Polignac number, because none of the positive numbers 2^k-1616562145 is a prime.

It is a super-2 number, since 2×1616562145² = 5226546337294002050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1706562 + ... + 1707508.

It is an arithmetic number, because the mean of its divisors is an integer number (67906188).

Almost surely, 2^1616562145 is an apocalyptic number.

It is an amenable number.

1616562145 is a deficient number, since it is larger than the sum of its proper divisors (556435871).

1616562145 is a wasteful number, since it uses less digits than its factorization.

1616562145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761.

The product of its digits is 43200, while the sum is 37.

The square root of 1616562145 is about 40206.4938162979. The cubic root of 1616562145 is about 1173.6289171068.

The spelling of 1616562145 in words is "one billion, six hundred sixteen million, five hundred sixty-two thousand, one hundred forty-five".