2618705961 has 12 divisors (see below), whose sum is σ = 3783023088. Its totient is φ = 1745597304.

The previous prime is 2618705939. The next prime is 2618705981. The reversal of 2618705961 is 1695078162.

It is not a de Polignac number, because 2618705961 - 2⁷ = 2618705833 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2618705981) 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, 123786 + ... + 143388.

It is an arithmetic number, because the mean of its divisors is an integer number (315251924).

Almost surely, 2^2618705961 is an apocalyptic number.

It is an amenable number.

2618705961 is a deficient number, since it is larger than the sum of its proper divisors (1164317127).

2618705961 is a wasteful number, since it uses less digits than its factorization.

2618705961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34452 (or 34449 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2618705961 is about 51173.2934351503. The cubic root of 2618705961 is about 1378.3586803456.

The spelling of 2618705961 in words is "two billion, six hundred eighteen million, seven hundred five thousand, nine hundred sixty-one".