1493529857 has 4 divisors (see below), whose sum is σ = 1525307136. Its totient is φ = 1461752580.

The previous prime is 1493529847. The next prime is 1493529859. The reversal of 1493529857 is 7589253941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7589253941 = 47527 ⋅159683.

It is a cyclic number.

It is not a de Polignac number, because 1493529857 - 2⁸ = 1493529601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1493529799 and 1493529808.

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 3 ways as a sum of consecutive naturals, for example, 15888569 + ... + 15888662.

It is an arithmetic number, because the mean of its divisors is an integer number (381326784).

Almost surely, 2^1493529857 is an apocalyptic number.

It is an amenable number.

1493529857 is a deficient number, since it is larger than the sum of its proper divisors (31777279).

1493529857 is an equidigital number, since it uses as much as digits as its factorization.

1493529857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31777278.

The product of its digits is 2721600, while the sum is 53.

The square root of 1493529857 is about 38646.2140060317. The cubic root of 1493529857 is about 1143.0659893262.

The spelling of 1493529857 in words is "one billion, four hundred ninety-three million, five hundred twenty-nine thousand, eight hundred fifty-seven".