1919125 has 16 divisors (see below), whose sum is σ = 2581488. Its totient is φ = 1416000.

The previous prime is 1919123. The next prime is 1919149. The reversal of 1919125 is 5219191.

It can be written as a sum of positive squares in 8 ways, for example, as 531441 + 1387684 = 729^2 + 1178^2 .

It is not a de Polignac number, because 1919125 - 2¹ = 1919123 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1919093 and 1919102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1919123) 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, 1035 + ... + 2215.

It is an arithmetic number, because the mean of its divisors is an integer number (161343).

2^1919125 is an apocalyptic number.

It is an amenable number.

1919125 is a deficient number, since it is larger than the sum of its proper divisors (662363).

1919125 is a wasteful number, since it uses less digits than its factorization.

1919125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209 (or 1199 counting only the distinct ones).

The product of its digits is 810, while the sum is 28.

The square root of 1919125 is about 1385.3248716456. The cubic root of 1919125 is about 124.2704166162.

It can be divided in two parts, 191 and 9125, that added together give a triangular number (9316 = T₁₃₆).

The spelling of 1919125 in words is "one million, nine hundred nineteen thousand, one hundred twenty-five".