1613626345 has 8 divisors (see below), whose sum is σ = 1944387720. Its totient is φ = 1285543680.

The previous prime is 1613626321. The next prime is 1613626457. The reversal of 1613626345 is 5436263161.

It can be written as a sum of positive squares in 4 ways, for example, as 425514384 + 1188111961 = 20628^2 + 34469^2 .

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

It is not a de Polignac number, because 1613626345 - 2¹¹ = 1613624297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 668350 + ... + 670759.

It is an arithmetic number, because the mean of its divisors is an integer number (243048465).

Almost surely, 2^1613626345 is an apocalyptic number.

It is an amenable number.

1613626345 is a deficient number, since it is larger than the sum of its proper divisors (330761375).

1613626345 is a wasteful number, since it uses less digits than its factorization.

1613626345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339355.

The product of its digits is 77760, while the sum is 37.

The square root of 1613626345 is about 40169.9681976474. The cubic root of 1613626345 is about 1172.9180200796.

The spelling of 1613626345 in words is "one billion, six hundred thirteen million, six hundred twenty-six thousand, three hundred forty-five".