1875067921 has 8 divisors (see below), whose sum is σ = 1990374120. Its totient is φ = 1760318208.

The previous prime is 1875067919. The next prime is 1875067949. The reversal of 1875067921 is 1297605781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1329331600 + 545736321 = 36460^2 + 23361^2 .

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 1875067921 - 2¹ = 1875067919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1875067721) 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, 132166 + ... + 145663.

It is an arithmetic number, because the mean of its divisors is an integer number (248796765).

Almost surely, 2^1875067921 is an apocalyptic number.

It is an amenable number.

1875067921 is a deficient number, since it is larger than the sum of its proper divisors (115306199).

1875067921 is a wasteful number, since it uses less digits than its factorization.

1875067921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278243.

The product of its (nonzero) digits is 211680, while the sum is 46.

The square root of 1875067921 is about 43302.0544662722. The cubic root of 1875067921 is about 1233.1209265490.

The spelling of 1875067921 in words is "one billion, eight hundred seventy-five million, sixty-seven thousand, nine hundred twenty-one".