1078937640 has 576 divisors, whose sum is σ = 4302305280. Its totient is φ = 233164800.

The previous prime is 1078937627. The next prime is 1078937647. The reversal of 1078937640 is 467398701.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1078937647) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 22956097 + ... + 22956143.

It is an arithmetic number, because the mean of its divisors is an integer number (7469280).

Almost surely, 2^1078937640 is an apocalyptic number.

1078937640 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 1078937640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2151152640).

1078937640 is an abundant number, since it is smaller than the sum of its proper divisors (3223367640).

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

1078937640 is a wasteful number, since it uses less digits than its factorization.

1078937640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 116 counting only the distinct ones).

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

The square root of 1078937640 is about 32847.1861808588. The cubic root of 1078937640 is about 1025.6490483729.

The spelling of 1078937640 in words is "one billion, seventy-eight million, nine hundred thirty-seven thousand, six hundred forty".