1262640113 has 8 divisors (see below), whose sum is σ = 1443234432. Its totient is φ = 1082100096.

The previous prime is 1262640097. The next prime is 1262640121. The reversal of 1262640113 is 3110462621.

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

It is not a de Polignac number, because 1262640113 - 2⁴ = 1262640097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1262640143) 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, 73556 + ... + 89082.

It is an arithmetic number, because the mean of its divisors is an integer number (180404304).

Almost surely, 2^1262640113 is an apocalyptic number.

It is an amenable number.

1262640113 is a deficient number, since it is larger than the sum of its proper divisors (180594319).

1262640113 is a wasteful number, since it uses less digits than its factorization.

1262640113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27151.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1262640113 is about 35533.6476174344. The cubic root of 1262640113 is about 1080.8361474604.

The spelling of 1262640113 in words is "one billion, two hundred sixty-two million, six hundred forty thousand, one hundred thirteen".