1493689856 has 40 divisors (see below), whose sum is σ = 2991382944. Its totient is φ = 745113600.

The previous prime is 1493689837. The next prime is 1493689861. The reversal of 1493689856 is 6589863941.

It is a super-2 number, since 2×1493689856² = 4462218771834601472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1493689795 and 1493689804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233906 + ... + 240206.

Almost surely, 2^1493689856 is an apocalyptic number.

1493689856 is a gapful number since it is divisible by the number (16) 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 1493689856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1495691472).

1493689856 is an abundant number, since it is smaller than the sum of its proper divisors (1497693088).

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

1493689856 is an frugal number, since it uses more digits than its factorization.

1493689856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782 (or 6766 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 59.

The square root of 1493689856 is about 38648.2839981286. The cubic root of 1493689856 is about 1143.1068060272.

The spelling of 1493689856 in words is "one billion, four hundred ninety-three million, six hundred eighty-nine thousand, eight hundred fifty-six".