1345487973 has 16 divisors (see below), whose sum is σ = 1857038400. Its totient is φ = 865504640.

The previous prime is 1345487953. The next prime is 1345487981. The reversal of 1345487973 is 3797845431.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1345487973 - 2¹⁰ = 1345486949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345487953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 163993 + ... + 172001.

It is an arithmetic number, because the mean of its divisors is an integer number (116064900).

Almost surely, 2^1345487973 is an apocalyptic number.

It is an amenable number.

1345487973 is a deficient number, since it is larger than the sum of its proper divisors (511550427).

1345487973 is a wasteful number, since it uses less digits than its factorization.

1345487973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9972.

The product of its digits is 2540160, while the sum is 51.

The square root of 1345487973 is about 36680.8938413447. The cubic root of 1345487973 is about 1103.9767827177.

The spelling of 1345487973 in words is "one billion, three hundred forty-five million, four hundred eighty-seven thousand, nine hundred seventy-three".