920387046390 has 96 divisors (see below), whose sum is σ = 2571436697184. Its totient is φ = 210221383680.

The previous prime is 920387046361. The next prime is 920387046391. The reversal of 920387046390 is 93640783029.

It is a super-2 number, since 2×920387046390² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920387046391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1803382 + ... + 2256758.

It is an arithmetic number, because the mean of its divisors is an integer number (26785798929).

Almost surely, 2^920387046390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 920387046390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1285718348592).

920387046390 is an abundant number, since it is smaller than the sum of its proper divisors (1651049650794).

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

920387046390 is a wasteful number, since it uses less digits than its factorization.

920387046390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454782 (or 454775 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 51.

The spelling of 920387046390 in words is "nine hundred twenty billion, three hundred eighty-seven million, forty-six thousand, three hundred ninety".