1925378964 has 24 divisors (see below), whose sum is σ = 4991723520. Its totient is φ = 641792952.

The previous prime is 1925378951. The next prime is 1925378977. The reversal of 1925378964 is 4698735291.

1925378964 is a `hidden beast` number, since 19 + 2 + 537 + 8 + 96 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1925378951) and next prime (1925378977).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1925378964.

It is a congruent 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, 8913684 + ... + 8913899.

It is an arithmetic number, because the mean of its divisors is an integer number (207988480).

Almost surely, 2^1925378964 is an apocalyptic number.

It is an amenable number.

1925378964 is an abundant number, since it is smaller than the sum of its proper divisors (3066344556).

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

1925378964 is a wasteful number, since it uses less digits than its factorization.

1925378964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17827596 (or 17827588 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 1925378964 is about 43879.1404200219. The cubic root of 1925378964 is about 1244.0525932142.

The spelling of 1925378964 in words is "one billion, nine hundred twenty-five million, three hundred seventy-eight thousand, nine hundred sixty-four".