1790678340 has 480 divisors, whose sum is σ = 6797032704. Its totient is φ = 389283840.

The previous prime is 1790678311. The next prime is 1790678353. The reversal of 1790678340 is 438760971.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6967492 + ... + 6967748.

Almost surely, 2^1790678340 is an apocalyptic number.

1790678340 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 1790678340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3398516352).

1790678340 is an abundant number, since it is smaller than the sum of its proper divisors (5006354364).

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

1790678340 is a wasteful number, since it uses less digits than its factorization.

1790678340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1790678340 is about 42316.4074562102. The cubic root of 1790678340 is about 1214.3369038364.

The spelling of 1790678340 in words is "one billion, seven hundred ninety million, six hundred seventy-eight thousand, three hundred forty".