2640360953 has 8 divisors (see below), whose sum is σ = 2679692040. Its totient is φ = 2601244800.

The previous prime is 2640360929. The next prime is 2640361007. The reversal of 2640360953 is 3590630462.

It can be written as a sum of positive squares in 4 ways, for example, as 169078009 + 2471282944 = 13003^2 + 49712^2 .

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 2640360953 - 2¹⁴ = 2640344569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2640360913) 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, 28898 + ... + 78203.

It is an arithmetic number, because the mean of its divisors is an integer number (334961505).

Almost surely, 2^2640360953 is an apocalyptic number.

It is an amenable number.

2640360953 is a deficient number, since it is larger than the sum of its proper divisors (39331087).

2640360953 is a wasteful number, since it uses less digits than its factorization.

2640360953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107467.

The product of its (nonzero) digits is 116640, while the sum is 38.

The square root of 2640360953 is about 51384.4427137242. The cubic root of 2640360953 is about 1382.1476314650.

The spelling of 2640360953 in words is "two billion, six hundred forty million, three hundred sixty thousand, nine hundred fifty-three".