1309453953 has 8 divisors (see below), whose sum is σ = 1746117888. Its totient is φ = 872879664.

The previous prime is 1309453949. The next prime is 1309453961. The reversal of 1309453953 is 3593549031.

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

It is not a de Polignac number, because 1309453953 - 2² = 1309453949 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309453753) 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, 27651 + ... + 58167.

It is an arithmetic number, because the mean of its divisors is an integer number (218264736).

Almost surely, 2^1309453953 is an apocalyptic number.

It is an amenable number.

1309453953 is a deficient number, since it is larger than the sum of its proper divisors (436663935).

1309453953 is a wasteful number, since it uses less digits than its factorization.

1309453953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44823.

The product of its (nonzero) digits is 218700, while the sum is 42.

The square root of 1309453953 is about 36186.3780033316. The cubic root of 1309453953 is about 1094.0321307212.

The spelling of 1309453953 in words is "one billion, three hundred nine million, four hundred fifty-three thousand, nine hundred fifty-three".