1295220993 has 16 divisors (see below), whose sum is σ = 1891475712. Its totient is φ = 781850000.

The previous prime is 1295220989. The next prime is 1295221003. The reversal of 1295220993 is 3990225921.

It is a cyclic number.

It is not a de Polignac number, because 1295220993 - 2² = 1295220989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1295220593) 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, 69903 + ... + 86468.

It is an arithmetic number, because the mean of its divisors is an integer number (118217232).

Almost surely, 2^1295220993 is an apocalyptic number.

It is an amenable number.

1295220993 is a deficient number, since it is larger than the sum of its proper divisors (596254719).

1295220993 is a wasteful number, since it uses less digits than its factorization.

1295220993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156636.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 1295220993 is about 35989.1788319767. The cubic root of 1295220993 is about 1090.0538628939.

The spelling of 1295220993 in words is "one billion, two hundred ninety-five million, two hundred twenty thousand, nine hundred ninety-three".