1309945741 has 8 divisors (see below), whose sum is σ = 1413738144. Its totient is φ = 1206585840.

The previous prime is 1309945711. The next prime is 1309945753. The reversal of 1309945741 is 1475499031.

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 1309945741 - 2¹⁷ = 1309814669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309945711) 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, 101815 + ... + 113956.

It is an arithmetic number, because the mean of its divisors is an integer number (176717268).

Almost surely, 2^1309945741 is an apocalyptic number.

It is an amenable number.

1309945741 is a deficient number, since it is larger than the sum of its proper divisors (103792403).

1309945741 is a wasteful number, since it uses less digits than its factorization.

1309945741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216251.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1309945741 is about 36193.1725743959. The cubic root of 1309945741 is about 1094.1690744528.

The spelling of 1309945741 in words is "one billion, three hundred nine million, nine hundred forty-five thousand, seven hundred forty-one".