1494139860 has 288 divisors, whose sum is σ = 5220633600. Its totient is φ = 343388160.

The previous prime is 1494139819. The next prime is 1494139861. The reversal of 1494139860 is 689314941.

1494139860 is a `hidden beast` number, since 1 + 494 + 13 + 98 + 60 = 666.

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 (1494139861) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1801926 + ... + 1802754.

It is an arithmetic number, because the mean of its divisors is an integer number (18127200).

Almost surely, 2^1494139860 is an apocalyptic number.

1494139860 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 1494139860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2610316800).

1494139860 is an abundant number, since it is smaller than the sum of its proper divisors (3726493740).

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

1494139860 is a wasteful number, since it uses less digits than its factorization.

1494139860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 1494139860 is about 38654.1053447108. The cubic root of 1494139860 is about 1143.2215891115.

The spelling of 1494139860 in words is "one billion, four hundred ninety-four million, one hundred thirty-nine thousand, eight hundred sixty".