1925676638 has 16 divisors (see below), whose sum is σ = 3049584720. Its totient is φ = 909449856.

The previous prime is 1925676637. The next prime is 1925676703. The reversal of 1925676638 is 8366765291.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1925676638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925676637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62381 + ... + 87992.

It is an arithmetic number, because the mean of its divisors is an integer number (190599045).

Almost surely, 2^1925676638 is an apocalyptic number.

1925676638 is a deficient number, since it is larger than the sum of its proper divisors (1123908082).

1925676638 is a wasteful number, since it uses less digits than its factorization.

1925676638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150731.

The product of its digits is 3265920, while the sum is 53.

The square root of 1925676638 is about 43882.5322651280. The cubic root of 1925676638 is about 1244.1167023300.

The spelling of 1925676638 in words is "one billion, nine hundred twenty-five million, six hundred seventy-six thousand, six hundred thirty-eight".