1013121633 has 16 divisors (see below), whose sum is σ = 1396736000. Its totient is φ = 652533840.

The previous prime is 1013121631. The next prime is 1013121671. The reversal of 1013121633 is 3361213101.

It is not a de Polignac number, because 1013121633 - 2¹ = 1013121631 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1013121631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48768 + ... + 66366.

It is an arithmetic number, because the mean of its divisors is an integer number (87296000).

Almost surely, 2^1013121633 is an apocalyptic number.

It is an amenable number.

1013121633 is a deficient number, since it is larger than the sum of its proper divisors (383614367).

1013121633 is a wasteful number, since it uses less digits than its factorization.

1013121633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18252.

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 1013121633 is about 31829.5716747807. The cubic root of 1013121633 is about 1004.3548851122.

Adding to 1013121633 its reverse (3361213101), we get a palindrome (4374334734).

The spelling of 1013121633 in words is "one billion, thirteen million, one hundred twenty-one thousand, six hundred thirty-three".