1331013745 has 32 divisors (see below), whose sum is σ = 1733731200. Its totient is φ = 977785344.

The previous prime is 1331013731. The next prime is 1331013763. The reversal of 1331013745 is 5473101331.

It is a cyclic number.

It is not a de Polignac number, because 1331013745 - 2¹⁵ = 1330980977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 407539 + ... + 410791.

It is an arithmetic number, because the mean of its divisors is an integer number (54179100).

Almost surely, 2^1331013745 is an apocalyptic number.

It is an amenable number.

1331013745 is a deficient number, since it is larger than the sum of its proper divisors (402717455).

1331013745 is a wasteful number, since it uses less digits than its factorization.

1331013745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3409.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 1331013745 is about 36483.0610694881. The cubic root of 1331013745 is about 1100.0037864883.

The spelling of 1331013745 in words is "one billion, three hundred thirty-one million, thirteen thousand, seven hundred forty-five".