1616362745 has 8 divisors (see below), whose sum is σ = 1940145480. Its totient is φ = 1292750080.

The previous prime is 1616362729. The next prime is 1616362747. The reversal of 1616362745 is 5472636161.

It can be written as a sum of positive squares in 4 ways, for example, as 165971689 + 1450391056 = 12883^2 + 38084^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1616362745 - 2⁴ = 1616362729 is a prime.

It is a super-2 number, since 2×1616362745² = 5225257046847870050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1616362747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20576 + ... + 60465.

It is an arithmetic number, because the mean of its divisors is an integer number (242518185).

Almost surely, 2^1616362745 is an apocalyptic number.

It is an amenable number.

1616362745 is a deficient number, since it is larger than the sum of its proper divisors (323782735).

1616362745 is an equidigital number, since it uses as much as digits as its factorization.

1616362745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85035.

The product of its digits is 181440, while the sum is 41.

The square root of 1616362745 is about 40204.0140408890. The cubic root of 1616362745 is about 1173.5806601253.

The spelling of 1616362745 in words is "one billion, six hundred sixteen million, three hundred sixty-two thousand, seven hundred forty-five".