1493257530 has 64 divisors (see below), whose sum is σ = 3622745088. Its totient is φ = 393899520.

The previous prime is 1493257523. The next prime is 1493257537. The reversal of 1493257530 is 357523941.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1493257523) and next prime (1493257537).

It is not an unprimeable number, because it can be changed into a prime (1493257537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1729879 + ... + 1730741.

It is an arithmetic number, because the mean of its divisors is an integer number (56605392).

Almost surely, 2^1493257530 is an apocalyptic number.

1493257530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1493257530 is an abundant number, since it is smaller than the sum of its proper divisors (2129487558).

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

1493257530 is a wasteful number, since it uses less digits than its factorization.

1493257530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431.

The product of its (nonzero) digits is 113400, while the sum is 39.

The square root of 1493257530 is about 38642.6905119196. The cubic root of 1493257530 is about 1142.9965103774.

The spelling of 1493257530 in words is "one billion, four hundred ninety-three million, two hundred fifty-seven thousand, five hundred thirty".