1938867625 has 8 divisors (see below), whose sum is σ = 2419706952. Its totient is φ = 1551094000.

The previous prime is 1938867613. The next prime is 1938867631. The reversal of 1938867625 is 5267688391.

It can be written as a sum of positive squares in 4 ways, for example, as 70207641 + 1868659984 = 8379^2 + 43228^2 .

It is not a de Polignac number, because 1938867625 - 2¹⁵ = 1938834857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7755346 + ... + 7755595.

It is an arithmetic number, because the mean of its divisors is an integer number (302463369).

Almost surely, 2^1938867625 is an apocalyptic number.

It is an amenable number.

1938867625 is a deficient number, since it is larger than the sum of its proper divisors (480839327).

1938867625 is an equidigital number, since it uses as much as digits as its factorization.

1938867625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15510956 (or 15510946 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 55.

The square root of 1938867625 is about 44032.5745897285. The cubic root of 1938867625 is about 1246.9509955712.

The spelling of 1938867625 in words is "one billion, nine hundred thirty-eight million, eight hundred sixty-seven thousand, six hundred twenty-five".