1208640133 has 8 divisors (see below), whose sum is σ = 1262149056. Its totient is φ = 1155211200.

The previous prime is 1208640131. The next prime is 1208640137. The reversal of 1208640133 is 3310468021.

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 1208640133 - 2¹ = 1208640131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208640131) 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, 11998 + ... + 50608.

It is an arithmetic number, because the mean of its divisors is an integer number (157768632).

Almost surely, 2^1208640133 is an apocalyptic number.

It is an amenable number.

1208640133 is a deficient number, since it is larger than the sum of its proper divisors (53508923).

1208640133 is a wasteful number, since it uses less digits than its factorization.

1208640133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39995.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 1208640133 is about 34765.5020530410. The cubic root of 1208640133 is about 1065.2028922740.

The spelling of 1208640133 in words is "one billion, two hundred eight million, six hundred forty thousand, one hundred thirty-three".