1925388 has 36 divisors (see below), whose sum is σ = 4935840. Its totient is φ = 632736.

The previous prime is 1925387. The next prime is 1925389. The reversal of 1925388 is 8835291.

It is an interprime number because it is at equal distance from previous prime (1925387) and next prime (1925389).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1925381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2506 + ... + 3182.

2^1925388 is an apocalyptic number.

1925388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1925388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2467920).

1925388 is an abundant number, since it is smaller than the sum of its proper divisors (3010452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1925388 is a wasteful number, since it uses less digits than its factorization.

1925388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 761 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 1925388 is about 1387.5835110003. The cubic root of 1925388 is about 124.4054539366.

Subtracting 1925388 from its reverse (8835291), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 1925388 in words is "one million, nine hundred twenty-five thousand, three hundred eighty-eight".