1611963245 has 8 divisors (see below), whose sum is σ = 1934685816. Its totient is φ = 1289350656.

The previous prime is 1611963229. The next prime is 1611963259. The reversal of 1611963245 is 5423691161.

It can be written as a sum of positive squares in 4 ways, for example, as 13402921 + 1598560324 = 3661^2 + 39982^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1611963245 - 2⁴ = 1611963229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1611963199 and 1611963208.

It is a congruent number.

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, 9209 + ... + 57521.

It is an arithmetic number, because the mean of its divisors is an integer number (241835727).

Almost surely, 2^1611963245 is an apocalyptic number.

It is an amenable number.

1611963245 is a deficient number, since it is larger than the sum of its proper divisors (322722571).

1611963245 is an equidigital number, since it uses as much as digits as its factorization.

1611963245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54991.

The product of its digits is 38880, while the sum is 38.

The square root of 1611963245 is about 40149.2620729198. The cubic root of 1611963245 is about 1172.5149216978.

The spelling of 1611963245 in words is "one billion, six hundred eleven million, nine hundred sixty-three thousand, two hundred forty-five".