1494007578 has 160 divisors (see below), whose sum is σ = 3932945280. Its totient is φ = 415134720.

The previous prime is 1494007577. The next prime is 1494007597. The reversal of 1494007578 is 8757004941.

It is a happy number.

1494007578 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1494007577) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 11404573 + ... + 11404703.

It is an arithmetic number, because the mean of its divisors is an integer number (24580908).

Almost surely, 2^1494007578 is an apocalyptic number.

1494007578 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 1494007578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1966472640).

1494007578 is an abundant number, since it is smaller than the sum of its proper divisors (2438937702).

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

1494007578 is a wasteful number, since it uses less digits than its factorization.

1494007578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 1494007578 is about 38652.3942078625. The cubic root of 1494007578 is about 1143.1878501679.

The spelling of 1494007578 in words is "one billion, four hundred ninety-four million, seven thousand, five hundred seventy-eight".