1916992548025 has 27 divisors (see below), whose sum is σ = 2413662957741. Its totient is φ = 1510339052640.

The previous prime is 1916992548017. The next prime is 1916992548041. The reversal of 1916992548025 is 5208452996191.

The square root of 1916992548025 is 1384555.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 22383451321 + 1894609096704 = 149611^2 + 1376448^2 .

It is not a de Polignac number, because 1916992548025 - 2³ = 1916992548017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 463823859 + ... + 463827991.

Almost surely, 2^{1916992548025} is an apocalyptic number.

1916992548025 is the 1384555-th square number.

1916992548025 is the 692278-th centered octagonal number.

It is an amenable number.

1916992548025 is a deficient number, since it is larger than the sum of its proper divisors (496670409716).

1916992548025 is an frugal number, since it uses more digits than its factorization.

1916992548025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8410 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 13996800, while the sum is 61.

The spelling of 1916992548025 in words is "one trillion, nine hundred sixteen billion, nine hundred ninety-two million, five hundred forty-eight thousand, twenty-five".