1303072749 has 24 divisors (see below), whose sum is σ = 2083984032. Its totient is φ = 777949920.

The previous prime is 1303072739. The next prime is 1303072753. The reversal of 1303072749 is 9472703031.

It is not a de Polignac number, because 1303072749 - 2⁵ = 1303072717 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303072739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91594 + ... + 104859.

It is an arithmetic number, because the mean of its divisors is an integer number (86832668).

Almost surely, 2^1303072749 is an apocalyptic number.

It is an amenable number.

1303072749 is a deficient number, since it is larger than the sum of its proper divisors (780911283).

1303072749 is a wasteful number, since it uses less digits than its factorization.

1303072749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196537 (or 196534 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 1303072749 is about 36098.0989665661. The cubic root of 1303072749 is about 1092.2520978364.

The spelling of 1303072749 in words is "one billion, three hundred three million, seventy-two thousand, seven hundred forty-nine".