1351215906 has 16 divisors (see below), whose sum is σ = 2703994464. Its totient is φ = 450144864.

The previous prime is 1351215893. The next prime is 1351215907. The reversal of 1351215906 is 6095121531.

It is not an unprimeable number, because it can be changed into a prime (1351215907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53716 + ... + 74751.

It is an arithmetic number, because the mean of its divisors is an integer number (168999654).

Almost surely, 2^1351215906 is an apocalyptic number.

1351215906 is an abundant number, since it is smaller than the sum of its proper divisors (1352778558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1351215906 is a wasteful number, since it uses less digits than its factorization.

1351215906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130225.

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 1351215906 is about 36758.8888025740. Note that the first 4 decimals coincide. The cubic root of 1351215906 is about 1105.5411600990.

The spelling of 1351215906 in words is "one billion, three hundred fifty-one million, two hundred fifteen thousand, nine hundred six".