1319675921 has 16 divisors (see below), whose sum is σ = 1374325248. Its totient is φ = 1265846400.

The previous prime is 1319675893. The next prime is 1319675947. The reversal of 1319675921 is 1295769131.

It is a cyclic number.

It is not a de Polignac number, because 1319675921 - 2⁶ = 1319675857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319675821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2687486 + ... + 2687976.

It is an arithmetic number, because the mean of its divisors is an integer number (85895328).

Almost surely, 2^1319675921 is an apocalyptic number.

It is an amenable number.

1319675921 is a deficient number, since it is larger than the sum of its proper divisors (54649327).

1319675921 is a wasteful number, since it uses less digits than its factorization.

1319675921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1112.

The product of its digits is 102060, while the sum is 44.

The square root of 1319675921 is about 36327.3439849378. The cubic root of 1319675921 is about 1096.8715298749.

The spelling of 1319675921 in words is "one billion, three hundred nineteen million, six hundred seventy-five thousand, nine hundred twenty-one".