1395075921 has 8 divisors (see below), whose sum is σ = 1860626400. Its totient is φ = 929788032.

The previous prime is 1395075901. The next prime is 1395075937. The reversal of 1395075921 is 1295705931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1395075921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1395075901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52896 + ... + 74753.

It is an arithmetic number, because the mean of its divisors is an integer number (232578300).

Almost surely, 2^1395075921 is an apocalyptic number.

It is an amenable number.

1395075921 is a deficient number, since it is larger than the sum of its proper divisors (465550479).

1395075921 is a wasteful number, since it uses less digits than its factorization.

1395075921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131295.

The product of its (nonzero) digits is 85050, while the sum is 42.

The square root of 1395075921 is about 37350.7151337160. The cubic root of 1395075921 is about 1117.3758507587.

The spelling of 1395075921 in words is "one billion, three hundred ninety-five million, seventy-five thousand, nine hundred twenty-one".