1321953607 has 8 divisors (see below), whose sum is σ = 1427871536. Its totient is φ = 1216639872.

The previous prime is 1321953559. The next prime is 1321953629. The reversal of 1321953607 is 7063591231.

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 1321953607 - 2¹¹ = 1321951559 is a prime.

It is a super-2 number, since 2×1321953607² = 3495122678120620898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321953637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146493 + ... + 155254.

It is an arithmetic number, because the mean of its divisors is an integer number (178483942).

Almost surely, 2^1321953607 is an apocalyptic number.

1321953607 is a deficient number, since it is larger than the sum of its proper divisors (105917929).

1321953607 is a wasteful number, since it uses less digits than its factorization.

1321953607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302097.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 1321953607 is about 36358.6799402839. The cubic root of 1321953607 is about 1097.5022132468.

The spelling of 1321953607 in words is "one billion, three hundred twenty-one million, nine hundred fifty-three thousand, six hundred seven".