1494644788 has 144 divisors (see below), whose sum is σ = 3494486016. Its totient is φ = 546099840.

The previous prime is 1494644779. The next prime is 1494644797. The reversal of 1494644788 is 8874464941.

It is an interprime number because it is at equal distance from previous prime (1494644779) and next prime (1494644797).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3373695 + ... + 3374137.

It is an arithmetic number, because the mean of its divisors is an integer number (24267264).

Almost surely, 2^1494644788 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1494644788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747243008).

1494644788 is an abundant number, since it is smaller than the sum of its proper divisors (1999841228).

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

1494644788 is a wasteful number, since it uses less digits than its factorization.

1494644788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 519 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The square root of 1494644788 is about 38660.6361561731. The cubic root of 1494644788 is about 1143.3503542946.

The spelling of 1494644788 in words is "one billion, four hundred ninety-four million, six hundred forty-four thousand, seven hundred eighty-eight".