1920474738 has 192 divisors, whose sum is σ = 5521904640. Its totient is φ = 489888000.

The previous prime is 1920474737. The next prime is 1920474739. The reversal of 1920474738 is 8374740291.

1920474738 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1920474737) and next prime (1920474739).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1920474693 and 1920474702.

It is not an unprimeable number, because it can be changed into a prime (1920474737) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1065438 + ... + 1067238.

It is an arithmetic number, because the mean of its divisors is an integer number (28759920).

Almost surely, 2^1920474738 is an apocalyptic number.

1920474738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1920474738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2760952320).

1920474738 is an abundant number, since it is smaller than the sum of its proper divisors (3601429902).

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

1920474738 is a wasteful number, since it uses less digits than its factorization.

1920474738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1870 (or 1857 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 1920474738 is about 43823.2214470821. The cubic root of 1920474738 is about 1242.9954329220.

The spelling of 1920474738 in words is "one billion, nine hundred twenty million, four hundred seventy-four thousand, seven hundred thirty-eight".