1738138380 has 144 divisors (see below), whose sum is σ = 5522721792. Its totient is φ = 407721600.

The previous prime is 1738138351. The next prime is 1738138387. The reversal of 1738138380 is 838318371.

1738138380 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1738138380² = 6042250056058048800, which contains 22 as substring.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1738138387) 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, 221199 + ... + 228921.

Almost surely, 2^1738138380 is an apocalyptic number.

1738138380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1738138380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2761360896).

1738138380 is an abundant number, since it is smaller than the sum of its proper divisors (3784583412).

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

1738138380 is a wasteful number, since it uses less digits than its factorization.

1738138380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788 (or 7775 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1738138380 is about 41690.9867957092. The cubic root of 1738138380 is about 1202.3422723810.

Subtracting from 1738138380 its reverse (838318371), we obtain a square (899820009 = 29997²).

The spelling of 1738138380 in words is "one billion, seven hundred thirty-eight million, one hundred thirty-eight thousand, three hundred eighty".