920692638 has 48 divisors (see below), whose sum is σ = 2114002800. Its totient is φ = 289080960.

The previous prime is 920692607. The next prime is 920692649. The reversal of 920692638 is 836296029.

920692638 is a `hidden beast` number, since 9 + 2 + 0 + 6 + 9 + 2 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 920692593 and 920692602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108 + ... + 42911.

It is an arithmetic number, because the mean of its divisors is an integer number (44041725).

Almost surely, 2^920692638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 920692638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1057001400).

920692638 is an abundant number, since it is smaller than the sum of its proper divisors (1193310162).

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

920692638 is a wasteful number, since it uses less digits than its factorization.

920692638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43097 (or 43094 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 920692638 is about 30342.9174273009. The cubic root of 920692638 is about 972.8328417961.

The spelling of 920692638 in words is "nine hundred twenty million, six hundred ninety-two thousand, six hundred thirty-eight".