1493529858 has 18 divisors (see below), whose sum is σ = 3236336649. Its totient is φ = 497788632.

The previous prime is 1493529847. The next prime is 1493529859. The reversal of 1493529858 is 8589253941.

It can be written as a sum of positive squares in 2 ways, for example, as 1219196889 + 274332969 = 34917^2 + 16563^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=27327.

It is not an unprimeable number, because it can be changed into a prime (1493529859) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 159408 + ... + 168516.

Almost surely, 2^1493529858 is an apocalyptic number.

1493529858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1493529858 is an abundant number, since it is smaller than the sum of its proper divisors (1742806791).

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

1493529858 is an frugal number, since it uses more digits than its factorization.

1493529858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18226 (or 9114 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 1493529858 is about 38646.2140189696. The cubic root of 1493529858 is about 1143.0659895814.

The spelling of 1493529858 in words is "one billion, four hundred ninety-three million, five hundred twenty-nine thousand, eight hundred fifty-eight".